[1]李世红,吴君飞,金玉顺?鄢,等.聚L-丙交酯-ε-己内酯/DL-丙交酯共聚物-聚L-丙交酯热塑性弹性体的制备及表征[J].合成橡胶工业,2022,5:351-356.
LI Shi-hong,WU Jun-fei,JIN Yu-shun,et al.Preparation and characterization of poly (L-lactide)-ε-caprolactone / DL-lactide copolymer-poly(L-lactide) thermoplastic elastomers[J].China synthetic rubber industy,2022,5:351-356.
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聚L-丙交酯-ε-己内酯/DL-丙交酯共聚物-聚L-丙交酯热塑性弹性体的制备及表征(PDF)
《合成橡胶工业》[ISSN:1000-1255/CN:62-1036/TQ]
- 期数:
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2022年5期
- 页码:
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351-356
- 栏目:
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- 出版日期:
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2022-09-15
文章信息/Info
- Title:
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Preparation and characterization of poly (L-lactide)-ε-caprolactone / DL-lactide copolymer-poly(L-lactide) thermoplastic elastomers
- 文章编号:
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1000-1255(2022)05-0351-06
- 作者:
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李世红; 吴君飞; 金玉顺?鄢; 伍一波; 连慧琴
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北京石油化工学院 新材料与化工学院/特种弹性体复合材料北京市重点实验室, 北京 102617
- Author(s):
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LI Shi-hong; WU Jun-fei; JIN Yu-shun; WU Yi-bo; LIAN Hui-qin
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School of New Materials and Chemical Engineering/Beijing Key Laboratory of Special Elastomeric Composite Materials, Beijing Institute of Petrochemical Technology, Beijing 102617, China
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- 关键词:
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ε-己内酯; DL-丙交酯; L-丙交酯; 开环聚合; 热塑性弹性体; 嵌段共聚物
- Keywords:
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ε-caprolactone; DL-lactide; L-lactide; ring-opening polymerization; thermoplastic elastomer; block copolymer
- 分类号:
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TQ 334.9
- DOI:
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DOI:10.19908/j.cnki.ISSN1000-1255.2022.05.0351
- 文献标识码:
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A
- 摘要:
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以辛酸亚锡为催化剂,1,4-丁二醇为引发剂,将ε-己内酯与DL-丙交酯进行开环聚合制备两端带有羟基的ε-己内酯和DL-丙交酯共聚物(PCDLA-OH预聚物),然后以PCDLA-OH预聚物引发L-丙交酯开环聚合制备两端为聚L-丙交酯链段,中间为ε-己内酯和DL-丙交酯共聚物链段的三嵌段共聚物(PLLA-b-PCDLA-b-PLLA),并对嵌段共聚物的结构与性能进行了测试。结果表明,PCDLA-OH预聚物中DL-丙交酯的用量越大,预聚物逐渐从部分结晶转变为无定形聚合物,玻璃化转变温度逐渐升高。当DL-丙交酯与ε-己内酯的摩尔比为3/10,PCDLA-OH预聚物与L-丙交酯的质量比为1/5时,所制备的PLLA-b-PCDLA-b-PLLA的扯断伸长率为204%,拉伸强度为4.77 MPa。
- Abstract:
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Using stannous octanoate as catalyst and 1,4-butanediol as initiator, ring-opening polymerization of ε-caprolactone and DL-lactide was carried out to prepare ε-caprolactone and DL-lactide copolymer with hydroxyl groups at both ends (PCDLA-OH prepolymer), and then L-lactide ring-opening polymerization was initiated by PCDLA-OH prepolymer to prepare triblock copolymer with poly L-lactide segments at both ends and ε-caprolactone and DL-lactide copolymer in the middle (PLLA-b-PCDLA-b-PLLA) was prepared, and the structure and properties of the block copolymer were tested. The results showed that the larger the amount of DL-lactide in PCDLA-OH prepolymer, the prepolymer gradually changed from partial crystallization to amorphous polymer, and the glass transition tempe-rature gradually increased. When the mole ratio of DL-lactide to ε-caprolactone was 3/10 and the mass ratio of PCDLA-OH prepolymer to L-lactide was 1/5, the elongation at break and tensile strength of the prepared PLLA-b-PCDLA-b-PLLA were 204% and 4.77 MPa.
参考文献/References
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备注/Memo
- 备注/Memo:
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北京市大学生科研训练项目(2019 J 00016)。
更新日期/Last Update:
2022-09-15