Synthesis and properties of hemicelluloses-based semi-IPN hydrogels

Feng Peng; Ying Guan; Bing Zhang; Jing Bian; Jun-Li Ren; Chun-Li Yao; Run-Cang Sun

doi:10.1016/j.ijbiomac.2014.02.003

Synthesis and properties of hemicelluloses-based semi-IPN hydrogels

Int J Biol Macromol. 2014 Apr:65:564-72. doi: 10.1016/j.ijbiomac.2014.02.003. Epub 2014 Feb 11.

Authors

Feng Peng¹, Ying Guan², Bing Zhang², Jing Bian², Jun-Li Ren³, Chun-Li Yao², Run-Cang Sun⁴

Affiliations

¹ Beijing Key Laboratory of Lignocellulosic Chemistry, College of Materials Science and Technology, Beijing Forestry University, Beijing 100083, China. Electronic address: fengpeng@bjfu.edu.cn.
² Beijing Key Laboratory of Lignocellulosic Chemistry, College of Materials Science and Technology, Beijing Forestry University, Beijing 100083, China.
³ State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China.
⁴ Beijing Key Laboratory of Lignocellulosic Chemistry, College of Materials Science and Technology, Beijing Forestry University, Beijing 100083, China. Electronic address: rcsun3@bjfu.edu.cn.

PMID: 24530334
DOI: 10.1016/j.ijbiomac.2014.02.003

Abstract

Hemicelluloses were extracted from holocellulose of bamboo by alkaline treatment. The phosphorylated poly(vinyl alcohol) (P-PVA) samples with various substitution degrees were prepared through the esterification of PVA and phosphoric acid. A series of hydrogels of semi-interpenetrating polymeric networks (semi-IPN) composed of hemicelluloses-g-poly(acrylic acid) (HM-g-PAA) and the phosphorylated poly(vinyl alcohol) (P-PVA) were prepared by radical polymerization using potassium persulphate (KPS) as initiator. The HM-g-PAA networks were crosslinked by N,N-methylenebisacrylamide (MBA) as a crosslinking agent in the presence of linear P-PVA. FT-IR results confirmed that the hydrogels comprised a porous crosslink structure of P-PVA and HM with side chains that carried carboxylate and phosphorylate groups. SEM observations indicated that the incorporation of P-PVA induced highly porous structure, and P-PVA was uniformly dispersed in the polymeric network. The interior network structures of the semi-IPN matrix became more porous with increasing P-PVA. The TGA results showed that the thermo-decomposing temperature and thermal stability were increased effectively for intruding the chain of P-PVA. The maximum equilibrium swelling ratio of hydrogels in distilled water and 0.9 wt% sodium chloride solutions was up to 1085 g g(-1) and 87 g g(-1), respectively. The compressive strength increased with increasing the MBA/HM and P-PVA/HM ratios, and decreased with the increment of AA/HM ratio.

Keywords: Hemicelluloses; Hydrogels; Phosphorylated poly(vinyl alcohol); Semi-interpenetrated polymer network.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Biocompatible Materials / chemical synthesis*
Biocompatible Materials / chemistry*
Chemistry Techniques, Synthetic
Compressive Strength
Drug Stability
Hydrogels / chemistry*
Hydrogen-Ion Concentration
Phosphorylation
Polymerization*
Polysaccharides / chemical synthesis*
Polysaccharides / chemistry*
Salts / chemistry
Temperature

Substances

Biocompatible Materials
Hydrogels
Polysaccharides
Salts
hemicellulose