Mechanical and Thermal Properties of Sericin/PVA/Bentonite Scaffold: Comparison between Uncrosslinked and Crosslinked

被引：14

作者：

Likitamporn, Saowanee ^{[1
,2
]}

Magaraphan, Rathanawan ^{[1
,2
]}

机构：

[1] Chulalongkorn Univ, Petr & Petrochem Coll, Polymer Proc & Polymer Nanomat Res Unit, Bangkok 10330, Thailand

[2] Chulalongkorn Univ, Ctr Excellence Petrochem & Mat Technol, Bangkok 10330, Thailand

来源：

MACROMOLECULAR SYMPOSIA | 2014年 / 337卷 / 01期

关键词：

bentonite; clay aerogel; porous structure; scaffold; silk sericin; SILK SERICIN; AEROGEL; PROTEIN; CLAY;

D O I：

10.1002/masy.201450312

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Clay aerogel is a highly porous material produced from smectite clays using freeze-drying techniques which produces a structure this is appropriated for 3D scaffolds. In this research, sericin and poly(vinyl alcohol) were blended with bentonite aerogels to develop the biomedical foam-liked materials for tissue engineering. Sericin/PVA/bentonite scaffolds were prepared by varying sericin contents in 1, 2, and 3 wt%. Glutaraldehyde was used as a chemical cross-linking agent in order to compare the properties of uncross-linked and cross-linked scaffolds. The morphology and crystal structure of sericin/PVA/bentonite scaffolds were identified by FE-SEM and XRD, respectively. The mechanical properties were characterized by compression tests and thermal properties were investigated by TG-DTA. The freeze-drying technique produced scaffolds with modulate modulus, interconnected pores, and pore sizes greater than 100 mu m. Chemical crosslinking increased the mechanical properties but slightly decreased thermal stability of the scaffolds. Furthermore, crosslinking improved the structure stability of scaffolds in an aqueous solution.

引用

页码：102 / 108

页数：7

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