Autonomic healable waterborne organic-inorganic polyurethane hybrids based on aromatic disulfide moieties

被引：55
作者：
Aguirresarobe, R. H. [1 ]
Martin, L. [2 ]
Fernandez-Berridi, M. J. [1 ]
Irusta, L. [1 ]
机构：
[1] Univ Basque Country UPV EHU, Fac Chem, Polymer Sci & Technol Dept, POLYMAT, Lejona, Vizcaya, Spain
[2] Univ Basque Country, Polytech Sch, Macrobehav Mesostruct Nanotechnol SGiker Serv, Lejona, Vizcaya, Spain
来源：
EXPRESS POLYMER LETTERS | 2017年 / 11卷 / 04期
关键词：
smart polymers; metathesis; waterborne polyurethanes; disulfide bonds; healing; SELF-HEALING MATERIALS; POLYMER NETWORKS; RESOLUTION; COMPOSITES; COPOLYMERS; SILICATES; RUBBER; LINKS;
D O I：
10.3144/expresspolymlett.2017.27
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Aromatic disulfide dynamic structures were incorporated as chain extenders in waterborne organic-inorganic polyurethane hybrids in order to provide autonomic healable characteristics. The synthesis was carried out following the acetone process methodology and the influence of the introduction of the healing agents in the polymer dispersion stability was analyzed. After the crosslinking process at room temperature, organic-inorganic hybrid films, which presented autonomic healing characteristics, were obtained. These features were evaluated by means of stress-strain tests and the films showed repetitive healing abilities. Thus, the optimum healing time at room temperature (25 degrees C) as well as the influence of different parameters in the healing efficiency, such the aromatic disulfide concentration or the physical properties of the polymer matrix were analyzed.
引用
收藏
页码：266 / 277
页数：12
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