Study on modified VAc-VeoVa10 latex prepared by soap-free emulsion polymerization

IF 1.4 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

Journal of Elastomers and Plastics Pub Date : 2023-10-18 DOI:10.1177/00952443231207969

Zheqing Gong, Lijun Chen

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引用次数: 0

Abstract

Modified latex is prepared via the soap-free emulsion polymerization of ethyl acetate (VAc) and vinyl versatate (VeoVa10). DFHMA is used as modified monomers. The composite surfactants of SR-10 and ANPEO-10 are used as the composite emulsifiers. The polymerization is initiated by potassium sulfate (KPS). The structure of latex film was characterized by Fourier transform infrared spectroscopy (FTIR). The latex films were tested by thermogravimetric analysis (TGA), differential scanning calorimetry (DSC) and contact angle (CA) determinator. The particle size of the latex emulsion particle size is determined by the Zetatrac dynamic light scatter. Results show that the optimum condition of preparing the modified latex can be obtained, i.e. the amount of emulsifier is 4.0%; the mass ratio of SR-10 to ANPEO-10 is 1:1; the amount of initiator is 0.5%; the mass ratio ofVAc to VeoVa10 is 1:1; the amount of DFHMA is 5.0%. The appearance of the latex is blue and translucent with a small particle size. The conversion rate is more than 98%. Compared with the conventional latex, the hydrophobicity and heat resistance of the film have been improved. Moreover, the latex has good chemical stability and mechanical stability.

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无皂乳液聚合法制备改性VAc-VeoVa10乳胶的研究

以醋酸乙酯(VAc)和versatate乙烯酯(VeoVa10)为原料，采用无皂乳液聚合法制备了改性乳胶。DFHMA作为改性单体。采用复合表面活性剂SR-10和ANPEO-10作为复合乳化剂。聚合反应由硫酸钾(KPS)引发。用傅里叶变换红外光谱(FTIR)对乳胶膜的结构进行了表征。采用热重分析(TGA)、差示扫描量热法(DSC)和接触角测定仪(CA)对乳胶膜进行了测试。乳胶乳液的粒径大小由齐特拉克动态光散射决定。结果表明，制备改性乳胶的最佳条件为乳化剂用量为4.0%;SR-10与ANPEO-10的质量比为1:1;引发剂用量为0.5%;vac与VeoVa10的质量比为1:1;DFHMA的金额为5.0%。乳胶的外观为蓝色半透明，颗粒尺寸小。转化率达98%以上。与常规乳胶相比，该膜的疏水性和耐热性都得到了改善。此外，乳胶具有良好的化学稳定性和机械稳定性。

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来源期刊

Journal of Elastomers and Plastics 工程技术-材料科学：综合

CiteScore

3.30

自引率

5.90%

发文量

审稿时长

6 months

期刊介绍： The Journal of Elastomers and Plastics is a high quality peer-reviewed journal which publishes original research on the development and marketing of elastomers and plastics and the area in between where the characteristics of both extremes are apparent. The journal covers: advances in chemistry, processing, properties and applications; new information on thermoplastic elastomers, reinforced elastomers, natural rubbers, blends and alloys, and fillers and additives.