聚(碳酸丁二醇酯-co-三环癸烷二甲醇碳酸酯)的制备与性能

采用熔融酯交换和缩聚两步法，合成了以1,4-丁二醇、4,8-三环5.2.1.0(2,6)]癸烷二甲醇和碳酸二苯酯为原料的聚(碳酸丁二醇酯-co-三环癸烷二甲醇碳酸酯)(PBTCx， x为进料中TCD占二元醇总量的百分比)。用1H NMR和13C NMR对PBTCs的微观结构和组成进行了表征。采用GPC、 DSC、 XRD、 TG对PBTCs的分子量、玻璃化转变温度(Tg)、热稳定性等进行了研究。结果表明,PBTCs的Mw为10500~124800 g?mol-1， Mn为6300~73000 g?mol-1， PDI为1.59~1.73； PBTCs呈无定形态、Tg为-3.43 ℃~70.90 ℃， PBTCs表现出比PBC更高的热稳定性。薄膜拉伸试验结果表明,PBTC30(拉伸强度为33.54 MPa，断裂伸长率为275.69%)和PBTC40(拉伸强度为32.13 MPa，断裂伸长率为294.63%)具有较高的强度和韧性，在薄膜材料中具有一定的应用潜力。

Preparation and Properties of Poly(butylenecarbonate-co-tricyclodecane dimethanol carbonate)

A series of Poly(butylene carbonate-co-tricyclodecane dimethanol carbonate)(PBTCx, x is the percentage of TCD in the total diol in the feed) were synthesized from 1,4-butanediol, 4,8-bis(hydroxymethyl)tricyclo5.2.1.0(2,6)]decane and diphenyl carbonate by two-step method of melting transesterification and polycondensation. The microstructure and composition of PBTCs were characterized by 1H NMR and 13C NMR. The molecular weight, glass transition temperature(Tg) and thermal stability of PBTCs were researched by GPC, DSC, XRD and TG. The results showed that the Mw of PBTCs was 10500~124800 g?mol-1, the Mn was 6300~73000 g?mol-1, and the PDI was 1.59~1.73; PBTCs showed amorphous morphology and Tg was -3.43~70.90 ℃. PBTCs showed higher thermal stability than PBC. The results of film tensile test show that PBTC30(tensile strength 33.54 MPa, breaking elongation 275.69%) and PBTC40(tensile strength 32.13 MPa, breaking elongation 294.63%) have higher strength and toughness, and have certain application potential in film materials.