温度响应高分子微凝胶的水相制备与表征——介绍一个大学化学综合实验

doi:10.3866/PKU.DXHX201912023

Abstract

Abstract:

This study illustrates a comprehensive experiment covering polymer chemistry, physical chemistry and instrumental analysis. In this experiment, the temperature-responsive poly(N-isopropylacrylamide) (pNIPAM) microgels are synthesized and characterized. The PNIPAM microgels are prepared by free-radical precipitation polymerization in aqueous phase. The temperature responsive properties of PNIPAM microgels were explored from two aspects, macroscopic and microscopic. This comprehensive experiment is based on the research of cutting-edge topics, which is helpful to cultivate students' ability of integrating theory with experiment and applying knowledge to practice, as well as to train students' awareness of interdisciplinary integration.

Key words: Temperature response, Polymer microgel, Preparation and characterization, Comprehensive experiment

Laiying Zhang, Ruyue Lan, Zhihong Liu, Weitai Wu. Aqueous Synthesis and Characterization of Temperature-Responsive Polymer Microgels: An Introduction of a Comprehensive Chemical Experiment[J].University Chemistry, 2021, 36(2): 1912023.

温度(T/℃)	透过率T/%
25.0	84.996
27.5	83.560
30.0	90.678
32.5	89.702
35.0	86.996
37.5	78.271
42.5	71.961
43.0	69.888
44.0	69.008
45.0	61.688

温度(T/℃)	粒径(D_h/nm)
25.0	194.34
27.5	171.28
30.0	153.65
32.5	138.11
35.0	99.41
37.5	90.87
40.0	84.98
42.5	81.69
45.0	80.44

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Aqueous Synthesis and Characterization of Temperature-Responsive Polymer Microgels: An Introduction of a Comprehensive Chemical Experiment

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