SYNTHESIS AND CHARACTERIZATION OF COPOLYMER OF2,5-BIS[(4-METHOXYPHENYL)OXYCARBONYL]STYRENE AND STYRENE WITH HIGH MOLECULAR WEIGHT*

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SYNTHESIS AND CHARACTERIZATION OF COPOLYMER OF2,5-BIS[(4-METHOXYPHENYL)OXYCARBONYL]STYRENE AND STYRENE WITH HIGH MOLECULAR WEIGHT*

Papers | Updated：2021-06-21

- SYNTHESIS AND CHARACTERIZATION OF COPOLYMER OF2,5-BIS[(4-METHOXYPHENYL)OXYCARBONYL]STYRENE AND STYRENE WITH HIGH MOLECULAR WEIGHT*
- Vol. 22, Issue 3, Pages: 289-293(2004)
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- Published：20 June 2004
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SYNTHESIS AND CHARACTERIZATION OF COPOLYMER OF2,5-BIS[(4-METHOXYPHENYL)OXYCARBONYL]STYRENE AND STYRENE WITH HIGH MOLECULAR WEIGHT*[J]. 2004, 22(3): 289-293.
DOI：

SYNTHESIS AND CHARACTERIZATION OF COPOLYMER OF2,5-BIS[(4-METHOXYPHENYL)OXYCARBONYL]STYRENE AND STYRENE WITH HIGH MOLECULAR WEIGHT*[J]. 2004, 22(3): 289-293. DOI：

摘要

The random copolymers of styrene and 2

5-bis[(4-methoxyphenyloxycarbonyl)styrene] (MPCS) with different copolymerization ratio were synthesized by conventional free radical polymerization. The copolymer having high molecular weight was experimentally elucidated using a combination of proton nuclear magnetic resonance spectroscopy and gel permeation chromatography. The liquid crystalline behavior of the copolymer was studied using differential scanning calorimetry

X-ray diffractometry and polarized optical microscopy. It was found that the liquid crystalline behavior was dependent on the content of styrene. Experimental results show that the copolymer could turn into a liquid crystalline phase at about 180℃ when the content of styrene was less than 20%. The mechanical properties of the copolymer were also studied. Preliminary results indicate that the tensile strength decreases while the tensile modulus increases as the content of MPCS is increased.

Abstract

The random copolymers of styrene and 2

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