CAJ | 학술논문

以双季戊四醇为核，二羟甲基丙酸为单体合成了不同代数的超支化聚酯。采用了IR、GPC、^13C NMR．DSC和化学滴定等方法对产物进行了表征和分析。试验结果表明聚合物具有较小的多分散性指数（拟两代超支化聚酯MwMn=1．159，拟四代超支化聚酯MwMn=1．028）。通过聚合物的^13 CNMR分析了超支化聚酯的支化度，表明在超支化聚酯中，端羟基的反应活性大于线性单元中羟基的活性。并用油酸对聚合物进行改性，研究了固含量与黏度的关系及其涂膜的性能：结果表明该树脂具有良好的成膜性和涂膜性能。
이쌍계무사순위핵，이간갑기병산위단체합성료불동대수적초지화취지。채용료IR、GPC、^13C NMR．DSC화화학적정등방법대산물진행료표정화분석。시험결과표명취합물구유교소적다분산성지수（의량대초지화취지MwMn=1．159，의사대초지화취지MwMn=1．028）。통과취합물적^13 CNMR분석료초지화취지적지화도，표명재초지화취지중，단간기적반응활성대우선성단원중간기적활성。병용유산대취합물진행개성，연구료고함량여점도적관계급기도막적성능：결과표명해수지구유량호적성막성화도막성능。
With dipentaerythritol as kernel and dimethylol propionic acid as monomer, we have synthesized hyperbranched polyesters with different generations. Using IR, GPC, ^13C NMR, DSC and chemical titration method, we have characterized and analyzed the products. The results show that the polymers have a small polydispersity index （MwMn= 1.159 for the quasi hyperbranched polyester with two generations and MwMn= 1.028 for the quasi hyperbranched polyester with four generations ）. Analyzing the branching degree of hyperbranched polyester through ^13C NMR, it is showed that the hydroxyl-terminated activity is greater than the activity of linear unit. Modified by oleic acid, the polymer is given good film forming and coating performance and the relation between solid content and viscosity and the film performance is studied.