SMA的合成及其对香精的分散和微胶囊制备的影响

doi:10.16085/j.issn.1000-6613.2019-0857

化工进展 ›› 2020, Vol. 39 ›› Issue (2): 702-708.DOI: 10.16085/j.issn.1000-6613.2019-0857

SMA的合成及其对香精的分散和微胶囊制备的影响

方文强(),祝琳华,司甜,孙彦琳(),何艳萍()

昆明理工大学化学工程学院，云南昆明 650500

收稿日期:2019-05-28 出版日期:2020-02-05 发布日期:2020-03-12
通讯作者: 孙彦琳,何艳萍
作者简介:方文强（1993—），男，硕士研究生，研究方向为高分子材料。E-mail：f964245879@163.com。
基金资助:
国家自然科学基金(21466016);云南省科技厅面上项目(2016FB024);昆明理工大学分析测试基金(2016T20140019);云南省万人计划“青年拔尖人才”项目

Synthesis of styrene-maleic anhydride copolymer (SMA) and its effect on the dispersion of perfume oil and the preparation of microcapsules

Wenqian FANG(),Linhua ZHU,Tian SI,Yanlin SUN(),Yanping HE()

College of Chemical Engineering, Kunming University of Science and Technology, Kunming 650500, Yunnan, China

Received:2019-05-28 Online:2020-02-05 Published:2020-03-12
Contact: Yanlin SUN,Yanping HE

摘要/Abstract

摘要：

使用溶液聚合法合成苯乙烯-马来酸酐共聚物（SMA），利用盐化的苯乙烯-马来酸钠盐作为保护胶体分散香精，采用原位聚合法制备三聚氰胺甲醛树脂香精油微胶囊。探究了不同分子量的SMA钠盐对香精的分散作用和对香精油微胶囊制备的影响,并与进口SMA 520对香精的分散作用和微胶囊制备效果进行了对比。实验发现，随着SMA分子量减小，香精油趋向于以较小粒径的液滴分散在连续相中，粒径分布逐渐变窄，香精油滴的分散稳定性提高。当使用的SMA钠盐溶液（质量分数10%）黏度≥145mPa·s时，可制备出粒径为5～20μm，形态为球形、表面有少许凹陷、壳层厚度较为均匀的微胶囊。当使用的SMA钠盐溶液（质量分数10%）的黏度≤67mPa·s时，只能形成极少数的球形微胶囊。作为保护胶体制备香精油微胶囊，进口SMA 520与实验室制备的黏度为314mPa·s的SMA钠盐溶液（质量分数10%）具备相似的效果。

关键词: 苯乙烯-马来酸酐共聚物, 香精油, 分散, 微胶囊

Abstract:

Styrene-maleic anhydride copolymer(SMA) was synthesized by solution polymerization, and then the salted styrene-maleate was used as a protective colloid to prepare perfume oil filled melamine formaldehyde microcapsules by in-situ polymerization. The effects of SMA sodium salts with different molecular weights on the dispersion of perfume oil and the preparation of perfume oil microcapsules were investigated. It was found that by decreasing the molecular weight of SMA, the particle size and the particle size distribution of perfume oil droplets decreased, while the dispersion stability of the perfume oil droplets increased. When the viscosity of the SMA sodium salt solution(10% mass fraction) was ≥145 mPa·s, the particle size of the prepared microcapsules was in the range of 5—20μm, with spherical shapes, smooth surfaces and the thickness of the shell is relatively uniform. When the viscosity of the SMA sodium salt solution (10% mass fraction) was ≤67mPa·s, only few microcapsules can be prepared. The performance of the imported SMA 520 was similar to the self-prepared SMA sodium salt solution (10% mass fraction) having a viscosity of 314mPa·s.

Key words: styrene-maleic anhydride copolymer, perfume oil, dispersion, microcapsules

中图分类号:

TQ65

方文强,祝琳华,司甜,孙彦琳,何艳萍. SMA的合成及其对香精的分散和微胶囊制备的影响[J]. 化工进展, 2020, 39(2): 702-708.

Wenqian FANG,Linhua ZHU,Tian SI,Yanlin SUN,Yanping HE. Synthesis of styrene-maleic anhydride copolymer (SMA) and its effect on the dispersion of perfume oil and the preparation of microcapsules[J]. Chemical Industry and Engineering Progress, 2020, 39(2): 702-708.

图/表 8

表1 SMA合成配方表

聚合物编号	BPO/g	DO/g	St加入时间/min
SMA 1	1.0	101.0	0
SMA 2	1.0	202.0	0
SMA 3	1.0	202.0	10
SMA 4	3.0	202.0	0
SAM 5	7.0	202.0	0

图1 香精油微胶囊制备工艺示意图

图2 聚合单体、SMA 520及实验室合成SMA的FTIR图

图3 不同分子量的SMA钠盐溶液（质量分数10%）的黏度

图4 不同分子量的SMA钠盐溶液分散香精油的OM图

图5 SMA钠盐溶液（质量分数10%）的黏度对香精分散的稳定时间关系图

图6 不同分子量的SMA制备微胶囊的OM图

图7 不同分子量的SMA制备的微胶囊的SEM图

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SMA的合成及其对香精的分散和微胶囊制备的影响

Synthesis of styrene-maleic anhydride copolymer (SMA) and its effect on the dispersion of perfume oil and the preparation of microcapsules

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