7、lysishavechangedwiththe23浙江理工大学2015级研究生高分子现代实验技术实验报告solventandthecatalystalkalipercentage.ThepartoftheproductperformanceofPVAcandPVAweretestedbytheviscositymethodmeasuringitsviscosityallmolecularweight、GelPermeationChromatography(GPC)、NMR、X-RrayDetection、strain r