期刊
ACS APPLIED POLYMER MATERIALS
卷 3, 期 3, 页码 1583-1594出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsapm.0c01399
关键词
wearable devices; hybrids; block copolymers; SAXS; nanoparticles
资金
- CNPq
- CAPES
- FAPEMIG
SEBS-MA was used as a template to guide the incorporation of aluminosilicate nanoparticles, leading to hybrids with enhanced properties for wearables. Stretching during in situ SAXS analysis showed severe damage to the lamellar phase, with high contents of NPs resulting in coarse particles ejected from the BCP lamellar structure.
Polystyrene-b-poly(ethylene-co-butylene)-b-polystyrene-grafted maleic an-hydride (SEBS-MA), a highly available block copolymer (BCP), was employed as a template to selectively guide the incorporation of aluminosilicate nanoparticles (NPs). To this end, hybrids with different amounts of sol-gel NPs in SEBS-MA were prepared by solvent casting. Results indicated that NPs could react with maleic anhydride-derived species in SEBS-MA to lead to cross-links in the EB block. Furthermore, the incorporation of NPs up to 15 wt % led to hybrids with enhanced strength and strain at break. In situ SAXS analysis during stretching showed that the lamellar phase was severely damaged upon stretching. Moreover, high contents of NPs led to morphologies with coarse particles ejected from the BCP lamellar structure. The overall result indicates that highly available BCP elastomers can be used as a platform for the design of hybrids with well-distributed NPs and enhanced properties useful for wearables.
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