聚甲基丙烯酸甲酯乳胶膜在溶剂退火过程中的结构演变

doi:10.7503/cjcu20150565

高等学校化学学报 ›› 2015, Vol. 36 ›› Issue (12): 2576.doi: 10.7503/cjcu20150565

聚甲基丙烯酸甲酯乳胶膜在溶剂退火过程中的结构演变

郑楠^1,², 刘甲雪^1,², 陈冉^1,², 赖宇晴¹(), 门永锋¹()

1. 中国科学院长春应用化学研究所, 高分子物理与化学国家重点实验室, 长春 130022
2. 中国科学院大学, 北京 100049

收稿日期:2015-07-20 出版日期:2015-12-10 发布日期:2015-11-17
作者简介:联系人简介: 赖宇晴, 女, 博士, 副研究员, 主要从事高分子薄膜结构与性能研究. E-mail:ylai@ciac.ac.cn;门永锋, 男, 博士, 研究员, 主要从事高分子物理研究. E-mail:men@ciac.ac.cn
基金资助:
国家自然科学基金(批准号: 21074136)、国家重点基础研究发展计划(批准号: 2012CB821500)和荷兰高分子研究所项目(批准号: 779)资助

Evolution of PMMA Latex During Solvent Annealing Process^†

ZHENG Nan^1,², LIU Jiaxue^1,², CHEN Ran^1,², LAI Yuqing^1,^*(), MEN Yongfeng^1,^*()

1. State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry,Chinese Academy of Sciences, Changchun 130022, China
2. University of Chinese Academy of Sciences, Beijing 100049, China

Received:2015-07-20 Online:2015-12-10 Published:2015-11-17
Contact: LAI Yuqing,MEN Yongfeng E-mail:ylai@ciac.ac.cn;men@ciac.ac.cn
Supported by:
† Supported by the National Natural Science Foundation of China(No.21074136), the National Basic Research Program of China(No.2012CB821500) and the Project of Dutch Polymer Institute, Holand(No.779)

摘要/Abstract

摘要：

通过乳液聚合的方法得到了单分散的聚甲基丙烯酸甲酯(PMMA)乳胶分散液, 利用小角X射线散射技术得到乳胶分散液中乳胶颗粒的粒径以及粒径分布. PMMA乳胶分散液在硅片上成膜后, 利用椭偏仪和扫描电子显微镜研究了其在2种溶剂退火过程中的膜厚以及结构变化. 干燥后的PMMA乳胶膜在相对良溶剂丙酮的溶剂退火过程中存在粒子的形变及溶胀2个过程, 而在相对不良溶剂乙醇的溶剂退火过程中仅存在粒子的溶胀过程.

关键词: 聚甲基丙烯酸甲酯(PMMA), 乳胶膜, 溶剂退火, 结构演变, 光谱型椭圆偏振仪

Abstract:

A mono-dispersed poly(methyl methacrylate)(PMMA) latex dispersion was synthesized by emulsion polymerization. Small angle X-ray scattering technique was applied to determine the particle size and size distribution of the PMMA latex dispersion. The PMMA latex film was prepared by casting the diluted dispersion on a silicon substrate. Spectroscopic ellipsometer and scanning electron microscope were used for the investigation of the thickness and structure variations of the prepared latex film during two kinds of solvent annealing processes. When the PMMA latex film was annealed in the relatively good solvent vapor, such as acetone, there were two processes during solvent annealing: particle deformation and swelling. And when the PMMA latex was annealed in relatively poor solvent vapor, such as ethanol, there was only one process: the swelling process.

Key words: Poly(methyl methacrylate)(PMMA), Latex dispersion, Solvent annealing, Structure evolution, Spectroscopic ellipsometer

中图分类号:

O631

TrendMD:

郑楠, 刘甲雪, 陈冉, 赖宇晴, 门永锋. 聚甲基丙烯酸甲酯乳胶膜在溶剂退火过程中的结构演变. 高等学校化学学报, 2015, 36(12): 2576.

ZHENG Nan, LIU Jiaxue, CHEN Ran, LAI Yuqing, MEN Yongfeng. Evolution of PMMA Latex During Solvent Annealing Process^†. Chem. J. Chinese Universities, 2015, 36(12): 2576.

图/表 7

Fig.1 Integrated 1-dimentional and fitting curve from PMMA latex dispersion

Fig.2 Three layers Cauchy model used during fitting process in ellipsometric experiment

Fig.3 Fitting process of ellipsometric experiment (A) Amplitude fitting; (B) phase fitting.

Fig.4 Thickness variation of PMMA latex film during acetone(A) and ethanol(B) annealing process Annealing times: a. 1; b. 2; c. 3.

Fig.5 SEM image of cross section from PMMA dried latex film

Fig.6 SEM images of cross section from ethanol annealed PMMA latex film Annealing times: (A) 1; (B) 2; (C) 3.

Fig.7 SEM images of cross section from acetone annealed PMMA latex film Annealing times: (A) 1; (B) 2; (C) 3.

参考文献 26

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聚甲基丙烯酸甲酯乳胶膜在溶剂退火过程中的结构演变

Evolution of PMMA Latex During Solvent Annealing Process^†

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聚甲基丙烯酸甲酯乳胶膜在溶剂退火过程中的结构演变

Evolution of PMMA Latex During Solvent Annealing Process†

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Evolution of PMMA Latex During Solvent Annealing Process^†