文章摘要
晏春苗.氨基磺酸盐型水性醋酸纤维乳液的制备与性能[J].精细化工,2019,36(11):
氨基磺酸盐型水性醋酸纤维乳液的制备与性能
Preparation and properties of sulfamate waterborne cellulose acetate emulsion
投稿时间:2019-03-31  修订日期:2019-06-17
DOI:
中文关键词: 自乳化,磺酸盐,醋酸纤维,水性乳液,耐热性
英文关键词: self-emulsification, sulfonate, cellulose acetate, waterborne emulsion, heat resistance
基金项目:陕西省教育厅产业化培育项目(2012JC04);西安市科技计划项目(2017068CG/RC031)
作者单位E-mail
晏春苗 陕西科技大学 化学与化工学院 2975024763@qq.com 
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中文摘要:
      采用乙二胺基乙磺酸钠(AAS)作为亲水扩链剂,在二月桂酸二丁基锡(DBTDL)的催化下,通过异佛尔酮二异氰酸酯(IPDI)将亲水基引入二醋酸纤维(CA)分子中,制得一种氨基磺酸盐型水性醋酸纤维乳液(SWCA),并将其流延成膜。利用FTIR、纳米粒度分析仪、粘度计、TEM、SEM、接触角测量仪、XRD、TGA,对SWCA结构及涂膜性能进行表征。考察了IPDI与AAS摩尔比对SWCA乳液粒径、粘度、涂膜表观形貌及耐水性的影响。结果表明:当n(IPDI/AAS)=1.1时,乳液最为稳定,微观形态呈水包油型(O/W)核壳结构,乳液粒径和分散系数(PDI)最小,分别为128 nm和0.112,此时乳液表观粘度最大为79.8 mP?s,所成涂膜致密平整;在n(IPDI/AAS)=1.1?1.4范围内,随着n(IPDI/AAS)的减小,涂膜接触角由(75.9??2?)增大至(110.2??2?);此外,与二醋酸纤维相比, SWCA涂膜结晶性减弱,呈微晶态或次晶态结构,具有较好的耐热性。
英文摘要:
      2-[(2-aminoethyl)amino]-ethanesulfonic acid monosodium salt (AAS) was selected as hydrophilic chain extender. By the introduction of hydrophilic group into CA molecular through IPDI, under the catalysis of DBTDL, a kind of sulfonate waterborne cellulose acetate emulsion (SWCA) was prepared, and cast into a film. The structure and properties of SWCA and coating film were characterized by FTIR, nano-particle size analyzer, viscometer, TEM, SEM, contact angle measuring instrument, XRD and TGA. The effects of IPDI and AAS molar ratio on particle size, viscosity, surface morphology and water resistance of SWCA were investigated. The results demonstrated that when n(IPDI/AAS)=1.1, the emulsion was the most stable, and microscopic morphology was in oil-in-water (O/W) core-shell structure; the particle size and dispersion coefficient (PDI) of the emulsion were the smallest (128 nm and 0.112, respectively); Meanwhile, the apparent viscosity of the emulsion was 79.8 mP?s, and the resulting film was compact and smooth. When n(IPDI/AAS) ranged from 1.1 to 1.4, the film contact angle increased from (75.9??2?) to (110.2??2?) with the decrease of n(IPDI/AAS). In addition, microcrystalline or subcrystalline SWCA film was obtained after the modification. Compared with CA, the SWCA coating film has weaker crystallinity, and it has a microcrystalline or subcrystalline structure and has good heat resistance.
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