HUANG Jian-hua, WU Ren-jie. A STUDY ON STRUCTURAL ISOMERISM OF SIDE CHAIN IN LIQUID CRYSTALLINE POLYSILOXANE BY NUCLEAR MAGNETIC RESONANCE METHOD. [J]. Acta Polymerica Sinica (6):742-747(1992)
DOI:
HUANG Jian-hua, WU Ren-jie. A STUDY ON STRUCTURAL ISOMERISM OF SIDE CHAIN IN LIQUID CRYSTALLINE POLYSILOXANE BY NUCLEAR MAGNETIC RESONANCE METHOD. [J]. Acta Polymerica Sinica (6):742-747(1992)DOI:
A STUDY ON STRUCTURAL ISOMERISM OF SIDE CHAIN IN LIQUID CRYSTALLINE POLYSILOXANE BY NUCLEAR MAGNETIC RESONANCE METHOD
An evidence has been found by 1H and 13C NMR techniques for the presence of structural isomerism of side chain in liquid crystalline polysiloxane due to α- and β-additions of alke-ne monomers. A liquid crystalline polysiloxane from poly (methylhydrosiloxane) and 4-(al-lyloxy) benzoyl-4-methoxyphenyl contains as many as 42% α-addition isomeric side chains based on our NMR data. It is thus pointed out that the strength change of Si-H absorption band in IR or NMR spectra can only reflect the extent of completion of hydrosilation
it does not necessarily mean the liquid crystalline polysiloxane produced contains β-addition iso-meric side chains only.
SYNTHESIS AND CHARACTERIZATION OF LIQUID CRYSTALLINE POLYSILOXANE WITH (p-((4-ALLYLOXY)BENZOXY)BENZOXY)-4- METHOXYPHENYL AS A MONOMER
SYNTHESIS AND CHARACTERIZATION OF PHOSPHORUS-CONTAINING LIQUID CRYSTALLINE COPOLYESTERS BASED ON BIPHENYL-4,4'-DICARBOXYLIC ACID
SYNTHESIS OF POLY[γ-(2-THIAZOLE-UREIDO)PROPYL]METHYLDIETHOXYSILANE METAL COMPLEXES AND THEIR MAGNETIC PROPERTIES
STUDY ON THE LB FILMS OF A HAIRY-ROD LADDER POLYSILSESQUIOXANE WITH TRIPHENYLENE SIDE GROUPS
EFFECT OF ESTER-AMIDE EXCHANGE REACTION ON THERMAL BEHAVIOUR AND MORPHOLOGY OF NYLON 6/THERMOTROPIC LIQUID CRYSTALLINE POLYMER BLENDS
Related Author
No data
Related Institution
Center for Degradable and Flame-Retardant Polymeric Materials, College of Chemistry, State Key Laboratory of Polymer Materials Engineering, National Engineering Laboratory of Eco-Friendly Polymeric Materials Sichuan, Sichuan University