TY - JOUR
TI - Post-electrospinning crosslinking of guar/polyvinyl alcohol membrane
AU - Shi Jingjing
AU - Yang Enlong
JN - Thermal Science
PY - 2016
VL - 20
IS - 1
SP - 1
EP - 5
PT - Article
AB - College of Material and Textile Engineering, Jiaxing University, Jiaxing,  China The present study reports post-electrospinning crosslinking of  guar/polyvinyl alcohol (PVA)/citric acid nanofiber membranes by heat  treatment. Porous, interconnected nonwoven nanofiber membranes (average  diameter 194±23 nm) were electrospun from a homogeneous blend of 1wt% guar  gum and 8wt% polyvinyl alcohol solution (3:7 weight ratio) containing 5 wt%  (by the total weight of the solution) citric acid. The electrospun nanofiber  membranes were then cured at 140 oC for 2 h. The crosslinked nanofiber  membranes were insoluble in water, while the non-crosslinked membranes  dissolved instantaneously. FT-IR spectrum investigates that crosslinking of  guar/PVA occurred through esterfication reaction during heat treatment.