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Liquid Crystalline Polymers Containing Heterocycloalkane Mesogenic Groups 5 Synthesis Of Biphasic Chiral Smectic Polysiloxanes Containing 25 Disubstituted 13 Dioxane And 25 Disubstituted 132 Dioxaborinane Based Mesogenic Groups
Download Liquid Crystalline Polymers Containing Heterocycloalkane Mesogenic Groups 5 Synthesis Of Biphasic Chiral Smectic Polysiloxanes Containing 25 Disubstituted 13 Dioxane And 25 Disubstituted 132 Dioxaborinane Based Mesogenic Groups full books in PDF, epub, and Kindle. Read online Liquid Crystalline Polymers Containing Heterocycloalkane Mesogenic Groups 5 Synthesis Of Biphasic Chiral Smectic Polysiloxanes Containing 25 Disubstituted 13 Dioxane And 25 Disubstituted 132 Dioxaborinane Based Mesogenic Groups ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Liquid Crystalline Polymers Containing Heterocycloalkane Mesogenic Groups. 5. Synthesis of Biphasic Chiral-Smectic Polysiloxanes Containing 2,5-Disubstituted-1,3-Dioxane and 2,5-Disubstituted-1,3,2-Dioxaborinane Based Mesogenic Groups by : Bruce Hahn
Download or read book Liquid Crystalline Polymers Containing Heterocycloalkane Mesogenic Groups. 5. Synthesis of Biphasic Chiral-Smectic Polysiloxanes Containing 2,5-Disubstituted-1,3-Dioxane and 2,5-Disubstituted-1,3,2-Dioxaborinane Based Mesogenic Groups written by Bruce Hahn and published by . This book was released on 1987 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: The synthesis of side-chain liquid crystalline polysiloxanes containing chiral mesogenic side-groups, is presented. Differential scanning calorimetry and optical polarization microscopy revealed chiral smectic mesomorphism for all polymers. The last two polymers present also a chiral smectic-C mesophase. All copolymers exhibit two glass transition temperatures; one due to the independent motion of the main chain, the other due to the cooperative but independent motion of the side-groups. Therefore, these liquid crystalline copolymers are biphasic systems resembling the behavior of phase separated graft copolymers, i.e., they exhibit a micro-phase separated morphology containing main-chain and side-chain domains.
Book Synopsis Liquid Crystalline Polymers Containing Heterocycloalkane Mesogens, Biphasic Side-Chain Liquid Crystalline Polysiloxanes Containing Trans 5-n-undecanyl-2-(4-cyanophenyl)-1,3-Dioxane Side Groups by : Chain S. Hsu
Download or read book Liquid Crystalline Polymers Containing Heterocycloalkane Mesogens, Biphasic Side-Chain Liquid Crystalline Polysiloxanes Containing Trans 5-n-undecanyl-2-(4-cyanophenyl)-1,3-Dioxane Side Groups written by Chain S. Hsu and published by . This book was released on 1987 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polysiloxanes and copolysiloxanes containing the trans 5-(n-undecanyl)-2-(4-cyanophenyl)-1,3-dioxane side group as mesogen were synthesized. Their phase behavior was studied by differential scanning calorimetry and optical polarization microscopy. Homopolymers containing the mesogen and a copolymer containing 33% of the mesogen showed smectic mesomorphism. The copolymers containing the mesogen showed two well defined Tg and thus present strong evidence for a phase separated morphology.
Book Synopsis Liquid Crystalline Polymers Containing Heterocycloalkane Mesogens. 4. Biphasic Side-Chain Liquid Crystalline Polysiloxanes Containing Trans 5-(n-Undecanyl)-2-(4-Methoxyphenyl)-1,3-Dioxane and Trans 2-(n-Decanyl)-5-(4-Methoxyphenyl)-1,3-Dioxane Mesogens by : Chain S. Hsu
Download or read book Liquid Crystalline Polymers Containing Heterocycloalkane Mesogens. 4. Biphasic Side-Chain Liquid Crystalline Polysiloxanes Containing Trans 5-(n-Undecanyl)-2-(4-Methoxyphenyl)-1,3-Dioxane and Trans 2-(n-Decanyl)-5-(4-Methoxyphenyl)-1,3-Dioxane Mesogens written by Chain S. Hsu and published by . This book was released on 1986 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: The synthesis and characterization of side-chain liquid crystalline polysiloxanes and copolysiloxanes containing trans 5-(n-undecanyl)-2-(4-methoxyphenyl)-1,3-dioxane and respectively trans 2-(n-decanyl)-5-(4-methoxyphenyl)-1-3-dioxane side groups is presented. In most cases the resulting polymers exhibit two glass transition temperatures, i.e., one due to the independent motion of the main chain, and the other due to the independent but cooperative motion of the side chains.
Book Synopsis Liquid Crystalline Polymers Containing Heterocycloalkane Mesogens. 2. Side-Chain Liquid Crystalline Polysiloxanes Containing 2,5-Disubstituted-1,3-Dioxane Mesogens by : C. S. Hsu
Download or read book Liquid Crystalline Polymers Containing Heterocycloalkane Mesogens. 2. Side-Chain Liquid Crystalline Polysiloxanes Containing 2,5-Disubstituted-1,3-Dioxane Mesogens written by C. S. Hsu and published by . This book was released on 1986 with total page 41 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polysiloxanes and copolysiloxanes containing 2-(p-hydroxyphenyl)-5-(p-methoxyphenyl)-1,3-dioxane and 5-(p-methoxyphenyl)-1,3-dioxan-2-yl as mesogenic units and an aliphatic spacer containing eleven and respectively, ten methylene units were synthesized. Their phase behavior was studied by differential scanning calorimetry and optical polarization microscopy, and compared with the phase behavior of the polysiloxanes and copolysiloxanes containing 4-meth-oxy-4'-hydroxybiphenyl and 4-cyano-4'-hydroxybiphenyl mesogens attached to the polymer backbone through an aliphatic spacer containing eleven methylene units. All synthesized polymers present smectic mesomorphism. The polymers containing 4-methoxy-4'-hydroxybiphenyl and 4-cyano-4'-hydroxybephenyl are also crystalline, while the polymers containing 1,3-dioxane based mesogens do not crystallize.
Book Synopsis Liquid Crystalline Polymers Containing Heterocycloalkane Mesogens. 1. Side-Chain Liquid Crystalline Polymethacrylates and Polycrylates Containing 2,5-Disubstituted-1,3-Dioxane Mesogens by : C. S. Hsu
Download or read book Liquid Crystalline Polymers Containing Heterocycloalkane Mesogens. 1. Side-Chain Liquid Crystalline Polymethacrylates and Polycrylates Containing 2,5-Disubstituted-1,3-Dioxane Mesogens written by C. S. Hsu and published by . This book was released on 1986 with total page 37 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polymethacrylates and polyacrylates containing 2-(p-hydroxphenyl)-5-(p-methoxyphenyl)-1-, 3-dioxane as a mesogenic unit and an aliphatic spacer containing eleven methylene units were synthesized. Their phase behavior was studied by differential scanning calorimetry and optical polarization microscopy, and compared with the phase behavior of the corresponding polymethacrylates and polyacrylates based on 4-methoxy-4'-hydroxbiphenyl mesogen. All polymers present smectic mesomorphism. The 2,5-disubstituted-1,3-dioxane mesogen resembles a terphenyl mesogen in which the internal phenyl ring was hydrogenated. Even so, when compared with the biphenyl containing polymers, the glass transition temperatures of the 1,3-dioxane containing polymers are lower, although their isotropization occurs at higher temperatures. Keywords: Side-chain thermotropic liquid crystalline polymers.
Book Synopsis Liquid Crystal Polymers by : D. Coates
Download or read book Liquid Crystal Polymers written by D. Coates and published by iSmithers Rapra Publishing. This book was released on 2000 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt: Liquid crystal polymers (LCPs) have a wide range of uses, from strong engineering plastics to delicate gels for use in liquid crystal (LC) displays. For this reason, it is essential reading for materials scientists, engineers or technologists in industry, as well as research laboratories or academia. An additional indexed section containing several hundred abstracts from the Rapra Polymer Library database gives useful references for further reading.
Book Synopsis Liquid Crystalline Polymers Containing Heterocycloalkane Mesogenic Groups. 6. Liquid Crystalline Polymethacrylates and Polyacrylates of Trans 2-(4-Hydroxyundecanyloxy)-3,5-Dimethylphenyl)-5-(4-Methoxyphenyl)-1,3-Dioxane by : Chain S. Hsu
Download or read book Liquid Crystalline Polymers Containing Heterocycloalkane Mesogenic Groups. 6. Liquid Crystalline Polymethacrylates and Polyacrylates of Trans 2-(4-Hydroxyundecanyloxy)-3,5-Dimethylphenyl)-5-(4-Methoxyphenyl)-1,3-Dioxane written by Chain S. Hsu and published by . This book was released on 1987 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: The synthesis and characterization of polymethacrylate and polyacrylate of trans 2-(4-(11-(hydroxyundecanyloxy-3, 5-dimethylphenyl)-5-(4-methoxyphenyl)-1,3-dioxane is presented. Both polymers exhibit nematic mesophases and do not present side-chain crystallization. At temperatures higher than 160 C the 1,3-dioxane-2,5-diyl groups undergo a thermally induced trans-cis isomerization. A radical mechanism was proposed for this isomerization. Keywords: Polyacrylates.
Book Synopsis Liquid-Crystal Polymers by : N.A. Platé
Download or read book Liquid-Crystal Polymers written by N.A. Platé and published by Springer Science & Business Media. This book was released on 1993-01-31 with total page 452 pages. Available in PDF, EPUB and Kindle. Book excerpt: Drawing a picture of the current situation of this new field, this volume both summarizes the past achievements and analyzes the present unsolved problems.
Author :Division on Engineering and Physical Sciences Publisher :National Academies Press ISBN 13 :0309042313 Total Pages :121 pages Book Rating :4.3/5 (9 download)
Book Synopsis Liquid Crystalline Polymers by : Division on Engineering and Physical Sciences
Download or read book Liquid Crystalline Polymers written by Division on Engineering and Physical Sciences and published by National Academies Press. This book was released on 1990-02-01 with total page 121 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Liquid Crystalline Polymers Containing Mesogenic Units Based on Half- Disc and Rod-Like Moieties. 5. Side Chain Liquid Crystalline Polymethylsiloxanes Containing Hemiphasmidic Mesogens Based on 4-(3,4,5-Tris(alkan-1-yloxy) Benzoyloxy)-4-(p-(propan-l-yloxy)benzoyloxy)biphenyl Groups by :
Download or read book Liquid Crystalline Polymers Containing Mesogenic Units Based on Half- Disc and Rod-Like Moieties. 5. Side Chain Liquid Crystalline Polymethylsiloxanes Containing Hemiphasmidic Mesogens Based on 4-(3,4,5-Tris(alkan-1-yloxy) Benzoyloxy)-4-(p-(propan-l-yloxy)benzoyloxy)biphenyl Groups written by and published by . This book was released on 1991 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt: The synthesis of hemiphasmidic monomers 4-(3,4,5-tris(S( - )-2- methylbutan-1-yloxybenzoyloxy -4'-(p-allyloxybenzoyloxy)biphenyl (4), 4-3,4,5- tris(n-pentan-1-yloxy)benzoyloxy-4'-(p-allyloxybenzoyloxy)biphenyl (15), and 4- (3,4,5-tris(n-dodecan-1-yloxy) benzoyloxy-4'-(p-allyloxybenzoyloxy) biphenyl (16) and of the corresponding polymethylsiloxanes (17,18, and 19) is described. Both monomers and polymers were characterized by a combination of differential scanning calorimetry (DSC), WAXS, SAXS, and thermal optical polarized microscopy. 15, 16, and 17 are crystalline. 17 exhibits an enantiotropic double layer smectic A or C mesophase. 18 displays a monotropic columnar hexagonal and an enantiotropic double layer smectic A or C mesophases. Due to its close proximity to the glass transition temperature, the columnar hexagonal phase of 18 is strongly kinetically controlled. 19 exhibits a very broad enantiotropic hexagonal columnar mesophase. The columns of the mesophases of 18 and 19 are generated by an elongated polymer backbone penetrating through the center of the column and tapered extended mesogens radiating out of it.
Book Synopsis Synthesis and Characterization of Poly(methylsiloxane)s Containing 5-(S( - )-2-Methyl-1-Butyl)-2-(4-(11-Undecan-1-Yloxy)Phenyl)-1,3,2-Dioxaborinane and 2-(4-(S( - )-2-Methyl-1-Butoxy)Phenyl)-5-(11-Undecan-1-Yl)-1,3,2-Dioxaborinane Constitutional Isomeric Side Groups by : V. Percec
Download or read book Synthesis and Characterization of Poly(methylsiloxane)s Containing 5-(S( - )-2-Methyl-1-Butyl)-2-(4-(11-Undecan-1-Yloxy)Phenyl)-1,3,2-Dioxaborinane and 2-(4-(S( - )-2-Methyl-1-Butoxy)Phenyl)-5-(11-Undecan-1-Yl)-1,3,2-Dioxaborinane Constitutional Isomeric Side Groups written by V. Percec and published by . This book was released on 1991 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: Previous publications from our laboratory reported the results of our investigations on the molecular engineering of phase transitions of side chain liquid crystalline polymers by using constitutional isomers of rigid rod-like mesogenic groups. Homopolymers based on constitutional isomeric rigid rod-like mesogens exhibit almost identical phase behavior. However, since their structural units are isomorphic within their mesophase and nonisomorphic within their crystalline phase, copolymers based on constitutional isomeric mesogens exhibit an isotropization temperature which is about the weight averaged value of their homopolymers and a highly depressed melting transition temperature. Consequently, copolymerization of these constitutional isomeric mesogens can be used to transform virtual or monotropic mesophases into enantiotropic mesophases. In a previous publication we have reported that isotropization temperatures of homopolymers containing constitutional isomeric mesogens based on a combination of rigid rod-like and flexible moieties are highly different.
Book Synopsis Synthesis and Characterization of Liquid Crystalline Polysiloxanes Containing Benzyl Ether Mesogens by : C. S. Hsu
Download or read book Synthesis and Characterization of Liquid Crystalline Polysiloxanes Containing Benzyl Ether Mesogens written by C. S. Hsu and published by . This book was released on 1986 with total page 31 pages. Available in PDF, EPUB and Kindle. Book excerpt: Side chain liquid crystalline polysiloxanes were synthesized by the hydrosilation of poly(methylhydrosiloxane) with p-(1-undecenyl-11-oxy) benzyl ethers of: 4-cyanophenol (IM), 4-methoxyphenol (IIM), 4-cyano-4'-hydroxybiphenyl (IIIM), 4-methoxy-4'-hydroxybiphenyl (IVM) and 2-cyano-6-hydroxynaphthalene (VM). The phase behavior of both monomeric and polymeric liquid crystals was characterized by differential scanning calorimetry and optical polarization microscopy. IM is a monotropic liquid crystal, IIM is crystalline, IIIM and IVM are enantiotropic liquid crystals, while VM presents two virtual liquid crystalline transitions and crystalline polymorphism. All the synthesized polysiloxanes present enantiotropic smectic mesomorphism.
Book Synopsis Synthesis and Characterization of Polymethacrylates, Polyacrylates, and Poly(methylsiloxane)s Containing 4-(S( - )-2-Methyl-1-Butoxy)-4'-(omega-Alkan-1-Yloxy)-alpha-Methylstilbene Side Groups by : V. Percec
Download or read book Synthesis and Characterization of Polymethacrylates, Polyacrylates, and Poly(methylsiloxane)s Containing 4-(S( - )-2-Methyl-1-Butoxy)-4'-(omega-Alkan-1-Yloxy)-alpha-Methylstilbene Side Groups written by V. Percec and published by . This book was released on 1991 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: Side chain liquid crystalline polymers exhibiting chiral smectic C mesophases are of interest for both theoretical and technological reasons which were reviewed recently. So far there are only few examples of side chain liquid crystalline polymers exhibiting mesophases. Previous experiments from out laboratory on the synthesis and characterization of side chain liquid crystalline polymers containing chiral centers in the mesogenic groups 13-14 led to polymers exhibiting SA mesophases.
Book Synopsis Synthesis and Characterization of Glassy Main Chain, Thermotropic Liquid Crystalline Polyesters Based Upon a Highly Substituted Phenylene-terephthalate Mesogenic Unit with Flexible Spacers by : Ann Marie Delvin
Download or read book Synthesis and Characterization of Glassy Main Chain, Thermotropic Liquid Crystalline Polyesters Based Upon a Highly Substituted Phenylene-terephthalate Mesogenic Unit with Flexible Spacers written by Ann Marie Delvin and published by . This book was released on 1988 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Polymer-modified Liquid Crystals by : Ingo Dierking
Download or read book Polymer-modified Liquid Crystals written by Ingo Dierking and published by Royal Society of Chemistry. This book was released on 2019-01-03 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt: Describing all aspects of polymer-dispersed and polymer-stabilized liquid crystals, this book is a must-have resource for practitioners in the area.
Book Synopsis Molecular Design, Synthesis, Characterization, and Processing of Liquid Crystalline Diblock Copolymers by : Guoping Mao
Download or read book Molecular Design, Synthesis, Characterization, and Processing of Liquid Crystalline Diblock Copolymers written by Guoping Mao and published by . This book was released on 1997 with total page 532 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Preparation of Liquid Crystalline Polymers with Cyclohexane Mesogens by : Arthur James Tipton
Download or read book Preparation of Liquid Crystalline Polymers with Cyclohexane Mesogens written by Arthur James Tipton and published by . This book was released on 1988 with total page 406 pages. Available in PDF, EPUB and Kindle. Book excerpt:
