Abstract n-Dodecyl mercaptan (DDM) chain transfer agent and 1,6-hexanediol diacrylate (HDDA) cross-linker were used to manipulate latex properties in a monomer-starved seeded semi-continuous emulsion polymerization of butyl acrylate (BA), fluorine monomer dodecafluoroheptyl methacrylate (DFMA) together with acrylic acid (AA) and 2-hydroxyethyl acrylate (HEA). The influences of both DDM and HDDA on the particle size of the latex, as well as on the gel content, thermostability (differential scanning calorimeter and thermal gravimetric analysis), surface properties (X-ray photoelectron spectra (XPS), contact angle analysis and atomic force microscopy), and viscoelasticity (N,N-dimethylacrylamide) of the polymer films were investigated. The results showed that the introduction of DDM and HDDA has no significant effects on the final particle size of the fluorinated pressure-sensitive adhesives (PSA) latexes. XPS analysis indicated that the fluoroalkyl groups had the tendency to enrich on the surface of the film. However, this enrichment of fluorine on the film surface was reduced after the introduction of HDDA, while increased with the addition of DDM. It was also found that the gel content, glass transition temperature (Tg), thermal stability, surface roughness, and modulus (G′, Gʺ) of the fluorinated latex PSA were all increased with the introduction of HDDA. Nevertheless, opposite trends were observed for the latex after the addition of DDM. Finally, the effects of DDM and HDDA on the adhesive properties (i.e. loop tack, peel strength and shear strength) of the fluorinated latex PSA were also evaluated.

中文翻译：

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控制链转移剂和交联剂浓度来改变氟化丙烯酸酯胶乳压敏胶的性能

摘要 正十二烷基硫醇 (DDM) 链转移剂和 1,6-己二醇二丙烯酸酯 (HDDA) 交联剂用于控制丙烯酸丁酯 (BA)、氟单体的单体饥饿种子半连续乳液聚合中的胶乳性能甲基丙烯酸十二氟庚酯 (DFMA) 与丙烯酸 (AA) 和丙烯酸 2-羟乙酯 (HEA)。DDM 和 HDDA 对乳胶粒径以及凝胶含量、热稳定性（差示扫描量热仪和热重分析）、表面性质（X 射线光电子能谱 (XPS)、接触角分析和原子力显微镜）和聚合物薄膜的粘弹性（N,N-二甲基丙烯酰胺）进行了研究。结果表明，DDM和HDDA的引入对氟化压敏胶(PSA)胶乳的最终粒径没有显着影响。XPS 分析表明氟代烷基有富集在薄膜表面的趋势。然而，在引入 HDDA 后，薄膜表面氟的这种富集减少了，而随着 DDM 的加入而增加。还发现氟化胶乳PSA的凝胶含量、玻璃化转变温度(Tg)、热稳定性、表面粗糙度和模量(G′，G′)都随着HDDA的引入而增加。然而，在添加 DDM 后，乳胶观察到相反的趋势。最后，DDM 和 HDDA 对粘合性能（即环粘性、