端羧基聚（乳酸-羟基乙酸）共聚物

端羧基聚（乳酸-羟基乙酸）共聚物OH-PLGA-COOH50/50非结晶型聚合物，类白色到浅黄褐色不规整颗粒或粉末。分子量3万以上玻璃化转变温度Tg：45～55℃，分子量3万以下随着分子量变小玻璃化转变温度Tg逐渐降低。干燥失重（%）≤0.5，灼烧残渣（%）≤0.5，重金属总含量（ppm）≤10催化剂残留(ppm)≤200 ,单体残留(%)≤1丙交酯LA摩尔含量   45 - 55%    乙交酯GA摩尔含量   45 - 55%
产品型号产品名称英文名称粘度IV(dl/g)分子量Mw（万，10kd）DG-50DLGH01850/50端羧基聚(外消旋乳酸－乙醇酸)共聚物50/50Poly(DL-lactide-co-glycolide)COOH0.08-0.180.5-1.5DG-50DLGH02550/50端羧基聚(外消旋乳酸－乙醇酸)共聚物50/50Poly(DL-lactide-co-glycolide)COOH0.18-0.251.5-2.4DG-50DLGH03550/50端羧基聚(外消旋乳酸－乙醇酸)共聚物50/50Poly(DL-lactide-co-glycolide)COOH0.25-0.352.4-3.8DG-50DLGH04550/50端羧基聚(外消旋乳酸－乙醇酸)共聚物50/50Poly(DL-lactide-co-glycolide)COOH0.35-0.453.8-5.3DG-50DLGH05550/50端羧基聚(外消旋乳酸－乙醇酸)共聚物50/50Poly(DL-lactide-co-glycolide)COOH0.45-0.555.3-7DG-50DLGH06550/50端羧基聚(外消旋乳酸－乙醇酸)共聚物50/50Poly(DL-lactide-co-glycolide)COOH0.55-0.657-8.8DG-50DLGH08050/50端羧基聚(外消旋乳酸－乙醇酸)共聚物50/50Poly(DL-lactide-co-glycolide)COOH0.65-0.88.8-11.7