新型液晶／高聚物复合膜的富氧性能及结构表征　Ⅱ．液晶／高聚物复合膜的结构表征

孙群辉; 林尚安

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新型液晶／高聚物复合膜的富氧性能及结构表征　Ⅱ．液晶／高聚物复合膜的结构表征

研究论文 | 更新时间：2021-03-19

- 新型液晶／高聚物复合膜的富氧性能及结构表征　Ⅱ．液晶／高聚物复合膜的结构表征
- STUDIES ON OXYGEN-ENRICHMENT PROPERTIES OF NOVEL LC/POLYMER COMPOSITE MEMBRANES AND STRUCTURAL CHARACTERIZATION Ⅱ. STRUCTURAL CHARACTERIZATION OF LC/POLYMER COMPOSITE MEMBRANE (PDLCM)
- 高分子学报 1995年第6期页码：672-678
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- 纸质出版日期：1995-12-20，
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孙群辉, 林尚安. 新型液晶／高聚物复合膜的富氧性能及结构表征　Ⅱ．液晶／高聚物复合膜的结构表征[J]. 高分子学报, 1995,(6):672-678.

SUN Qun-hui, LIN Shang-an. STUDIES ON OXYGEN-ENRICHMENT PROPERTIES OF NOVEL LC/POLYMER COMPOSITE MEMBRANES AND STRUCTURAL CHARACTERIZATION Ⅱ. STRUCTURAL CHARACTERIZATION OF LC/POLYMER COMPOSITE MEMBRANE (PDLCM)[J]. Acta Polymerica Sinica, 1995,(6):672-678.
孙群辉, 林尚安. 新型液晶／高聚物复合膜的富氧性能及结构表征　Ⅱ．液晶／高聚物复合膜的结构表征[J]. 高分子学报, 1995,(6):672-678. DOI：

SUN Qun-hui, LIN Shang-an. STUDIES ON OXYGEN-ENRICHMENT PROPERTIES OF NOVEL LC/POLYMER COMPOSITE MEMBRANES AND STRUCTURAL CHARACTERIZATION Ⅱ. STRUCTURAL CHARACTERIZATION OF LC/POLYMER COMPOSITE MEMBRANE (PDLCM)[J]. Acta Polymerica Sinica, 1995,(6):672-678. DOI：

摘要

用ＩＲ、ＤＳＣ、ＷＡＸＤ、正交偏光显微镜、ＳＥＭ、ＴＥＭ等手段，表征了所合成的液晶／烃橡胶／硅橡胶三元共混复合膜的织态结构及液晶态转变．结果发现，液晶ＰＥＥＣＢ—４．０５由于与ＳＢＲ和ＰＤＭＳ共混，Ｔｋ－ｓ转变温度下降了３７．５℃，体系存在不完全的相分离．液晶ＰＥＥＣＢ—４．０５在体系中形成液晶富集区（ＬＣ—ｒｉｃｈｄｏｍａｉｎ），大小约０２—２．２μｍ不等．在压力的作用下，连续的液晶富集区形成宽约７．０μｍ并垂直于膜的平面的通道．这些结果是第Ⅰ报中这类富氧膜透气率产生突变的根本原因．

Abstract

The compatibility

miscibility

membrane-formability

structure and LC transition properties of PEECB-4.05(α

ω-polyethylene glycol(DP=4.05)-p-ethoxycarbonyloxybenzoate)/hydrocarbon rubber(SBR

PB)/PDMS(Mw=370×103) composite membrane PDLCM have been charactenAn by IRS DSC

WAXD

cross-polarized microscope and SEM

TEM etc. Results showed that PEECB-4.05'sTk-s(transition temperature from crystal state to LC state) has been downed 37.5 ℃ to ambient temperature in SBR/PEECB-4.05/PDMS system because of the interactions between the components. There exists imperfect micro-phase separation in the system and LC-rich domains have been formed (domain size from 0.2 to 2.2 micron depending on the content of peecb-4.05).These despersed domains gradually changed to continuous phase with the increase of PEECB-4.05's content

resulting in the formation of large number of LC channels upon the action of gas pressure permeated. The mechanism of PEECB-4.05 Tk-s's downing has been investigated.

关键词

富氧膜液晶微相分离气体分离

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