Preparation and characterization of wet spun silk fibroin/poly(vinyl alcohol) blend filaments.
Silk fibroin (SF)/poly(vinyl alcohol) (PVA) blend filaments were prepared by a wet spinning process. Regenerated SF and PVA were dissolved in formic acid and the dope solution exhibited good fiber formation in a methanol coagulation bath. Due to the miscibility of SF/PVA in formic acid, the filament had a smooth surface and dense structure with a circular cross-section. The crystalline structure and thermal properties were varied with different SF/PVA ratios. The mechanical properties of the filament were also controlled by blending PVA with SF. Especially, the knot strength of the SF filament, which is a very important suture property, could be significantly improved by blending with PVA.
Lee
Ki Hoon
KH
Department of Biosystems and Biomaterials Science and Engineering, College of Agriculture and Life Sciences, Seoul National University, Seoul 151921, Republic of Korea.
Baek
Doo Hyun
DH
Ki
Chang Seok
CS
Park
Young Hwan
YH
D005349:Fibroins / Q000737:chemistry*; D005561:Formates / Q000737:chemistry*; D000432:Methanol / Q000737:chemistry*; D011142:Polyvinyl Alcohol / Q000737:chemistry*
D005561:Formates; C030544:formic acid; D011142:Polyvinyl Alcohol; D005349:Fibroins; D000432:Methanol