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[1]刘涛,孙理想,张利雄.丙烯酰胺水溶液微液滴中聚合致分相及异形颗粒的制备[J].南京工业大学学报(自然科学版),2020,42(05):555-562.[doi:10.3969/j.issn.1671-7627.2020.05.002]
 LIU Tao,SUN Lixiang,ZHANG Lixiong.Preparation of polymerized induced phase separation and shaped particles in micro-droplets of aqueous acrylamide solution[J].Journal of NANJING TECH UNIVERSITY(NATURAL SCIENCE EDITION),2020,42(05):555-562.[doi:10.3969/j.issn.1671-7627.2020.05.002]
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丙烯酰胺水溶液微液滴中聚合致分相及异形颗粒的制备()
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《南京工业大学学报(自然科学版)》[ISSN:1671-7627/CN:32-1670/N]

卷:
42
期数:
2020年05期
页码:
555-562
栏目:
出版日期:
2020-09-20

文章信息/Info

Title:
Preparation of polymerized induced phase separation and shaped particles in micro-droplets of aqueous acrylamide solution
文章编号:
1671-7627(2020)05-0555-08
作者:
刘涛孙理想张利雄
南京工业大学 化工学院 材料化学工程国家重点实验室,江苏 南京 211800
Author(s):
LIU Tao SUN Lixiang ZHANG Lixiong
State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 211800, China
关键词:
聚合致分相 丙烯酰胺(AM)水溶液 微液滴 分相过程 聚丙烯酰胺(PAM)异形颗粒
Keywords:
polymerization induced phase separation acrylamide(AM)water solution micro-droplet phase separation process polyacrylamide(PAM)shaped particles
分类号:
O468
DOI:
10.3969/j.issn.1671-7627.2020.05.002
文献标志码:
A
摘要:
丙烯酰胺(AM)、聚乙二醇(PEG)水溶液液滴经聚合致分相可得到以聚丙烯酰胺(PAM)为核的核壳结构液滴。通过提高体系中交联剂N,N-亚甲基双丙烯酰胺(MBAM)含量,在AM水溶液液滴中也会发生聚合致分相形成核壳结构液滴。考察聚合温度、AM质量分数、MBAM质量分数、MBAM与AM质量比(m(MBAM)/m(AM))等对分相过程的影响。结果表明:在聚合温度为92 ℃、AM质量分数>5%、MBAM质量分数>1%、m(MBAM)/m(AM)>0.3时,均可观察到液滴经聚合致分相形成的核壳结构; 通过改变形成液滴的水相与油相流速比可以调节液滴中PAM核的形状。将液滴中的核收集,通过傅里叶变换红外光谱仪(FT-IR)和扫描电子显微镜(SEM)表征,证明其核为PAM,得到了蘑菇形以及其他形貌的PAM颗粒。
Abstract:
Aqueous droplets of acrylamide(AM)and polyethylene glycol(PEG)aqueous solution could be polymerized and phase separated to obtain core-shell structure droplets with polyacrylamide(PAM)as the core, and increasing the content of crosslinking agent N, N-methylenebisacrylamide(MBAM)in the system, polymerization-induced phase separation also occurred in the acrylamide aqueous droplets to form core-shell structured droplets. The effects of polymerization temperature, AM mass fraction, MBAM mass fraction, MBAM and AM mass ratio(m(MBAM)/m(AM))on the phase separation process were investigated. Results showed that when the polymerization temperature was 92 ℃, the AM mass fraction was greater than 5%, the MBAM mass fraction was greater than 1%, and m(MBAM)/m(AM)was greater than 0.3, the split phase formed a core-shell structure, and the shape of the PAM core in the droplet could be adjusted by changing the flow rate ratio of the water phase to the oil phase that formed the droplet. The nuclei in the droplets were collected and characterized by Fourier transform infrared spectroscopy(FT-IR)and scanning electron microscopy(SEM). The nuclei were proved to be PAM, and mushroom-shaped and other morphology PAM particles were obtained.

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备注/Memo

备注/Memo:
收稿日期:2019-08-10
作者简介:刘涛(1994—),男,E-mail:taoliu@njtech.edu.cn; 张利雄(联系人),教授,E-mail:lixzhang@njtech.edu.cn.
引用格式:刘涛,孙理想,张利雄.丙烯酰胺水溶液微液滴中聚合致分相及异形颗粒的制备[J].南京工业大学学报(自然科学版),2020,42(5):555-562.
LIU Tao, SUN Lixiang, ZHANG Lixiong. Preparation of polymerized induced phase separation and shaped particles in micro-droplets of aqueous acrylamide solution[J].Journal of Nanjing Tech University(Natural Science Edition),2020,42(5):555-562..
更新日期/Last Update: 2020-09-24