Effect of P[MPEGMA-IL] on morphological evolution and conductivity behavior of PLA/PCL blends

被引：10

作者：

Wang, Ping ^{[1
,2
,3
]}

Zhou, Yiyang ^{[1
,2
]}

Xu, Pei ^{[1
,2
]}

Ding, Yunsheng ^{[1
,2
]}

机构：

[1] Hefei Univ Technol, Sch Chem & Chem Engn, Dept Polymer Sci & Engn, Hefei 230009, Anhui, Peoples R China

[2] Hefei Univ Technol, Anhui Key Lab Adv Funct Mat & Devices, Hefei 230009, Anhui, Peoples R China

[3] Anhui Jianzhu Univ, Sch Mat & Chem Engn, Hefei 230601, Anhui, Peoples R China

来源：

IONICS | 2019年 / 25卷 / 07期

基金：

中国国家自然科学基金;

关键词：

Blend; Ionic liquid; Morphological evolution; Dielectric properties; POLYMER BLENDS; IONIC LIQUIDS; DIELECTRIC-RELAXATION; POLYLACTIC ACID; COMPATIBILIZATION; CRYSTALLIZATION; PCL; DEGRADATION; MISCIBILITY; TOUGHNESS;

D O I：

10.1007/s11581-019-02871-3

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Dielectric relaxation spectroscopy (DRS) was used to investigate the effect of morphological evolution on conductivity behavior of PLA/PCL blends containing P[MPEGMA-IL]. The morphology of blends changes from sea-island morphology into co-continuous morphology with increasing P[MPEGMA-IL] content. P[MEPGMA-IL] could mainly localize in PCL domains and expand to the interface layer between the PLA and PCL phase because of the low viscosity of PCL phase and the high affinity of MEPGMA groups for both polymer phases. The dielectric results were discussed in terms of relaxation that corresponds to normal and segmental mode movement, interfacial polarization that corresponds to interfacial aggregation of charge carriers, and ac conductivity that originates from conductive network of mobile charge carriers. Co-continuous morphology and high ions concentration lead to the enhancement of segment movement and ion conductive channel in PCL phase, which correspond to high conductivity and low activation energy of PLA/PCL/8P[MEGMA-IL] blend.

引用

页码：3189 / 3196

页数：8

共 42 条

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