Calcium Lignosulfonate Graft Copolymerization with Methyl Methacrylate and the Preparation of Composite Membranes Consist of the Products and Cellulose
In order to promote the recycling of lignin in the cellulose spinning waste liquor, the recycled calcium lignosulfonate(CLS) was modified and blended with cellulose(CELL) to prepare composite membranes. Grafted CLS with methyl methacrylate(MMA) was synthesized by way of free radical copolymerization using Fe~(2+)-H_2O_2 as initiator. The modified products(CLS-g-PMMA) were characterized by Fourier transform infrared spectroscopy, differential scanning calorimetry and thermogravimetric analysis. Composite mem...