PMID- 29852226 OWN - NLM STAT- MEDLINE DCOM- 20181126 LR - 20181126 IS - 1879-0003 (Electronic) IS - 0141-8130 (Linking) VI - 118 IP - Pt A DP - 2018 Oct 15 TI - Preparation and characterization of novel poly (vinyl alcohol)/collagen double-network hydrogels. PG - 41-48 LID - S0141-8130(18)30884-5 [pii] LID - 10.1016/j.ijbiomac.2018.05.200 [doi] AB - Hydrogels prepared by conventional methods show poor performance in many aspects. Many double network (DN) hydrogels prepared by crosslinking agents have disadvantages such as toxicity. In this work, we prepared novel DN hydrogels with fish-originated collagen (Col) and poly (vinyl alcohol) (PVA), in which self-assembly of collagen and self-crosslinking of PVA were achieved. Infrared spectra indicated the existence of double network with chemical interactions between Col and PVA. X-ray diffraction (XRD) patterns showed that characteristic peak of freeze-thaw PVA in DN hydrogel was retained. Scanning electron microscope (SEM) images before and after degradation and swelling property tests indicated that the morphology of the hydrogel was a compact meshwork, which is consistent with the high water-retention rate. The degradation rate of the DN hydrogels was controlled by the ratio of Col and PVA. Compared with a pure collagen hydrogels, the stress of DN hydrogels was greatly enhanced from 6 to 33 kPa at a strain of 40%. This study indicates that DN hydrogels prepared by Col and PVA are an ideal biomaterial for tissue engineering. CI - Copyright (c) 2018. Published by Elsevier B.V. FAU - Wang, Mingchao AU - Wang M AD - School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai 264005, PR China. FAU - Li, Jie AU - Li J AD - Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, PR China. FAU - Li, Wenjun AU - Li W AD - Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, PR China. FAU - Du, Zhenning AU - Du Z AD - School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai 264005, PR China. Electronic address: zhenning.du@163.com. FAU - Qin, Song AU - Qin S AD - Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, PR China. Electronic address: sqin@yic.ac.cn. LA - eng PT - Journal Article DEP - 20180528 PL - Netherlands TA - Int J Biol Macromol JT - International journal of biological macromolecules JID - 7909578 RN - 0 (Biocompatible Materials) RN - 0 (Hydrogels) RN - 9002-89-5 (Polyvinyl Alcohol) RN - 9007-34-5 (Collagen) SB - IM MH - Animals MH - Biocompatible Materials/chemical synthesis/*chemistry MH - Collagen/chemical synthesis/*chemistry MH - Fishes MH - Hydrogels/chemical synthesis/*chemistry MH - Polyvinyl Alcohol/chemical synthesis/*chemistry MH - Tissue Engineering/methods OTO - NOTNLM OT - Collagen OT - Double-network OT - Hydrogel OT - Poly (vinyl alcohol) OT - Self-crosslink EDAT- 2018/06/01 06:00 MHDA- 2018/11/27 06:00 CRDT- 2018/06/01 06:00 PHST- 2018/02/23 00:00 [received] PHST- 2018/05/08 00:00 [revised] PHST- 2018/05/26 00:00 [accepted] PHST- 2018/06/01 06:00 [pubmed] PHST- 2018/11/27 06:00 [medline] PHST- 2018/06/01 06:00 [entrez] AID - S0141-8130(18)30884-5 [pii] AID - 10.1016/j.ijbiomac.2018.05.200 [doi] PST - ppublish SO - Int J Biol Macromol. 2018 Oct 15;118(Pt A):41-48. doi: 10.1016/j.ijbiomac.2018.05.200. Epub 2018 May 28.