CN111548456A - 一种赋予聚乳酸水诱导形状记忆的聚合物 - Google Patents

一种赋予聚乳酸水诱导形状记忆的聚合物 Download PDF

Info

Publication number
CN111548456A
CN111548456A CN202010482728.8A CN202010482728A CN111548456A CN 111548456 A CN111548456 A CN 111548456A CN 202010482728 A CN202010482728 A CN 202010482728A CN 111548456 A CN111548456 A CN 111548456A
Authority
CN
China
Prior art keywords
block
pla
pcl
shape memory
ptmg
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN202010482728.8A
Other languages
English (en)
Other versions
CN111548456B (zh
Inventor
宋晓峰
任亚君
周琦锋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Changchun University of Technology
Original Assignee
Changchun University of Technology
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Changchun University of Technology filed Critical Changchun University of Technology
Priority to CN202010482728.8A priority Critical patent/CN111548456B/zh
Publication of CN111548456A publication Critical patent/CN111548456A/zh
Application granted granted Critical
Publication of CN111548456B publication Critical patent/CN111548456B/zh
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F283/00—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G
    • C08F283/006—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polymers provided for in C08G18/00
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40—High-molecular-weight compounds
    • C08G18/4009—Two or more macromolecular compounds not provided for in one single group of groups C08G18/42 - C08G18/64
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40—High-molecular-weight compounds
    • C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
    • C08G18/4244—Polycondensates having carboxylic or carbonic ester groups in the main chain containing oxygen in the form of ether groups
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40—High-molecular-weight compounds
    • C08G18/61—Polysiloxanes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
    • C08G18/72—Polyisocyanates or polyisothiocyanates
    • C08G18/73—Polyisocyanates or polyisothiocyanates acyclic
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
    • C08G63/66—Polyesters containing oxygen in the form of ether groups
    • C08G63/664—Polyesters containing oxygen in the form of ether groups derived from hydroxy carboxylic acids
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18—Manufacture of films or sheets
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G2280/00—Compositions for creating shape memory
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2351/00—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers
    • C08J2351/08—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers grafted on to macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
    • C08J2367/04—Polyesters derived from hydroxy carboxylic acids, e.g. lactones
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2451/00—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers
    • C08J2451/08—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers grafted on to macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2467/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
    • C08J2467/04—Polyesters derived from hydroxy carboxylic acids, e.g. lactones

Abstract

本发明涉及一种赋予聚乳酸（PLA）水诱导形状记忆的嵌段聚合物。该嵌段聚合物主链由羟基封端的乙烯基聚硅氧烷（PMVS）嵌段、聚四氢呋喃（PTMG）嵌段以及聚己内酯（PCL）嵌段组成，侧链为聚丙烯酸（PAA）。其中，PMVS嵌段除主链聚硅氧烷柔韧性好外，活性双键侧基引发丙烯酸（AA）聚合得到PAA侧链，并且PAA链段的极性羧基可以很大程度上提高PLA的亲水性。PTMG嵌段不仅可以提高PLA的韧性，而且其低玻璃化转变温度可以在低温下实现融化与重结晶过程。PCL嵌段可以改善嵌段共聚物与PLA的相容性。该嵌段聚合物
Figure RE-531083DEST_PATH_IMAGE001
（PCL‑PTMG‑PCL‑(PMVS‑s‑PAA)‑PCL‑PTMG‑PCL）制备过程简单，不但较低温度下（20‑50℃）即可实现融化与重结晶，而且具有超强吸水性，能够赋予PLA水诱导形状记忆效应，且形状记忆恢复时间短，恢复效果好。同时，提高PLA的韧性与亲水性并且极大限度地降低其加工温度。

Description

一种赋予聚乳酸水诱导形状记忆的聚合物
技术领域
本发明涉及高分子形状记忆领域，特别涉及一种以PMVS柔性嵌段、PTMG软嵌段和PCL增容嵌段为主链，以及亲水PAA链段为侧基的嵌段聚合物，该聚合物与PLA共混复合材料具备水诱导形状记忆功能。
背景技术
具有一定形状的固体材料，在某种外界条件刺激下发生塑性形变，在经过特定环境刺激，材料又完全恢复到变形前形状的现象被称为形状记忆效应。根据实现记忆功能的环境条件不同，可分为感温型、感水型、感光型和感酸碱型等多种记忆材料，目前应用研究最多的是热致形状记忆和水诱导形状记忆高分子材料。
PLA是一种理想的绿色高分子材料，呈塑料状态，玻璃化转变温度高，加工温度高，脆性高，亲水性差，在使用过程中容易出现裂纹而不能重复利用。目前对PLA水诱导形状记忆研究特别少，大多数都是通过共混改性，存在相容性差的缺陷，极易引起相分离，并且很少涉及亲水改性与形状记忆功能兼顾。
发明内容
为了克服上述现存的技术缺陷，本发明提供了一种赋予PLA水诱导形状记忆的聚合物，恢复条件简单，恢复时间短，恢复效率高，同时可以有效提高PLA的韧性与亲水性。
本发明的技术方案：合成一种以PMVS柔性嵌段，PTMG（T g = -76℃）软嵌段和PCL（T g =-60℃）增容嵌段为主链，以亲水PAA为侧链的聚合物，共混PLA（T g = 62℃）。因为合成的聚合物具有良好的吸水性，并且与PLA的T g 相差较多，从而通过在水环境中吸水以及热辅助实现PLA的形状记忆。
所述的嵌段聚合物，其分子主链上PMVS柔性嵌段结构如下：
Figure RE-504601DEST_PATH_IMAGE001
，x为大于1的整数。
所述的嵌段聚合物，其分子主链上的PCL增容嵌段的结构如下：
Figure RE-780993DEST_PATH_IMAGE002
，n为大于1的整数。
所述的嵌段聚合物，其分子主链上的PTMG软嵌段的结构如下：
Figure RE-859807DEST_PATH_IMAGE003
，m为大于1的整数。
所述的嵌段聚合物，其分子侧基上的PAA亲水链段的结构如下：
Figure RE-357785DEST_PATH_IMAGE004
，y为大于1的整数。
附图说明
图1为嵌段聚合物的核磁共振氢谱图。
如图1所示，核磁谱图中，0～0.4ppm之间为PMVS中-Si-CH3氢的化学位移，1.4ppm、1.6～1.7ppm、2.4ppm、3.5ppm、4.1ppm均为PCL和PTMG中-CH2-中氢的化学位移，6 ppm左右乙烯基上氢的化学位移消失说明PMVS的双键侧基已经引发AA聚合。采用1H-NMR表征的结果说明一种以PMVS柔性嵌段、PTMG软嵌段和PCL增容嵌段为主链，以亲水PAA为侧链段的嵌段聚合物已经合成。
图2为本发明制备的嵌段聚合物和PLA共混薄膜形状记忆的过程。
具体实施方式
下面通过实施例对本发明进行具体描述。
实施例1：
称重适量PTMG放置于配有磁力搅拌棒的安瓿瓶中，抽真空通氮气，将催化剂辛酸亚锡甲苯溶液通过注射器加入瓶中，再加入己内酯单体，一定量甲苯溶剂65℃下搅拌45min后升温到120℃反应24h。产物通过石油醚沉降，40℃真空干燥12h。将所得产物PCL-PTMG-PCL与一定量PMVS放置于氮气吹扫的容器中，加入甲苯溶剂，搅拌至溶解再加入一定量六亚甲基二异氰酸酯与二月桂酸二丁基锡95℃反应1.5h，产物通过石油醚沉降，真空干燥。将所得产物置于三口烧瓶中，通氮气，四氢呋喃做溶剂，偶氮二异丁氰做催化剂，温度控制65℃，通过滴定漏斗滴加AA，反应5h，获得产物沉降并干燥。
将PLLA、PCL-PTMG-PCL-(PMVS-s-PAA)-PCL-PTMG-PCL按质量比1:1加入三氯甲烷溶剂当中，其中PLLA和PCL-PTMG-PCL-(PMVS-s-PAA)
-PCL-PTMG-PCL的浓度为29wt%，室温搅拌过夜。将搅拌过夜的溶液倒到玻璃板上，让溶液在玻璃板上自由流延。在常温（20℃左右）和常压自然挥发2h，待膜在空气中固化后，随后将样条加工成型，2天后形状固定，然后25℃抽真空干燥备用。
将加工成型的薄膜，放置于常温水中一段时间，随后将其固定临时形状，并吸干水分。放置于温水中，迅速恢复初始形状，说明PCL-PTMG-PCL
-(PMVS-s-PAA)-PCL-PTMG-PCL可以赋予PLLA水诱导形状记忆功能。

Claims (1)

1.一种赋予PLA水诱导形状记忆的嵌段聚合物，其特征在于：大分子主链上含有PMVS柔性嵌段、PTMG软嵌段和PCL增容嵌段，侧链为PAA亲水链段。其分子结构如下：
Figure RE-269980DEST_PATH_IMAGE001
所述赋予PLA水诱导形状记忆的嵌段聚合物，其分子主链上PMVS柔性嵌段结构如下：
Figure RE-220619DEST_PATH_IMAGE002
，x为大于1的整数。
所述赋予PLA水诱导形状记忆的嵌段聚合物，其分子主链上PCL增容嵌段的结构如下：
Figure RE-103124DEST_PATH_IMAGE003
，n为大于1的整数。
所述赋予PLA水诱导形状记忆的嵌段聚合物，其分子主链上PTMG软嵌段的结构如下：
Figure RE-517925DEST_PATH_IMAGE004
，m为大于1的整数。
所述赋予PLA水诱导形状记忆的嵌段聚合物，其分子侧链PAA的结构如下：
Figure RE-460473DEST_PATH_IMAGE005
，y为大于1的整数。
CN202010482728.8A 2020-06-01 2020-06-01 一种赋予聚乳酸水诱导形状记忆的聚合物 Active CN111548456B (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010482728.8A CN111548456B (zh) 2020-06-01 2020-06-01 一种赋予聚乳酸水诱导形状记忆的聚合物

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010482728.8A CN111548456B (zh) 2020-06-01 2020-06-01 一种赋予聚乳酸水诱导形状记忆的聚合物

Publications (2)

Publication Number Publication Date
CN111548456A true CN111548456A (zh) 2020-08-18
CN111548456B CN111548456B (zh) 2022-05-13

Family

ID=72000862

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010482728.8A Active CN111548456B (zh) 2020-06-01 2020-06-01 一种赋予聚乳酸水诱导形状记忆的聚合物

Country Status (1)

Country Link
CN (1) CN111548456B (zh)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113402866A (zh) * 2021-07-08 2021-09-17 长春工业大学 一种基于形状记忆调控药物释放的聚合物
CN115785650A (zh) * 2022-12-28 2023-03-14 扬州惠通新材料有限公司 一种丙交酯基的弹性聚氨酯水凝胶

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2426740A1 (en) * 2002-04-18 2003-10-18 Mnemoscience Gmbh Polyester urethanes
CN1849357A (zh) * 2003-07-30 2006-10-18 记忆科学有限公司 含有多元醇/聚酯嵌段聚合物的化妆品组合物
EP2075273A1 (en) * 2007-12-28 2009-07-01 Mnemoscience GmbH Multiple shape memory polymer networks
EP2103637A2 (de) * 2008-03-20 2009-09-23 GT Elektrotechnische Produkte GmbH Formgedächtnis-Polymere und Verfahren zu ihrer Herstellung
CN101747486A (zh) * 2009-12-24 2010-06-23 浙江大学 一种光致形状记忆聚合物及其制备方法
DE102011054925A1 (de) * 2011-10-28 2013-05-02 BAM Bundesanstalt für Materialforschung und -prüfung Verfahren und Farbstoffmischungen zur Kennzeichnung von Formgedächtnispolymeren und Artikel aus Formgedächtnispolymer mit schaltbarer Lesbarkeit
CN103910852A (zh) * 2014-03-04 2014-07-09 西安工程大学 可降解水性聚氨酯乳液及其制备方法
CN106832940A (zh) * 2017-01-24 2017-06-13 南京天朗制药有限公司 室温塑形形状记忆材料
CN106977726A (zh) * 2017-04-18 2017-07-25 长春工业大学 一种甲基乙烯基聚硅氧烷‑生物可降解聚酯嵌段共聚物
CN108503811A (zh) * 2018-04-26 2018-09-07 长春工业大学 一种赋予聚乳酸形状记忆的聚合物

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2426740A1 (en) * 2002-04-18 2003-10-18 Mnemoscience Gmbh Polyester urethanes
CN1849357A (zh) * 2003-07-30 2006-10-18 记忆科学有限公司 含有多元醇/聚酯嵌段聚合物的化妆品组合物
EP2075273A1 (en) * 2007-12-28 2009-07-01 Mnemoscience GmbH Multiple shape memory polymer networks
EP2103637A2 (de) * 2008-03-20 2009-09-23 GT Elektrotechnische Produkte GmbH Formgedächtnis-Polymere und Verfahren zu ihrer Herstellung
CN101747486A (zh) * 2009-12-24 2010-06-23 浙江大学 一种光致形状记忆聚合物及其制备方法
DE102011054925A1 (de) * 2011-10-28 2013-05-02 BAM Bundesanstalt für Materialforschung und -prüfung Verfahren und Farbstoffmischungen zur Kennzeichnung von Formgedächtnispolymeren und Artikel aus Formgedächtnispolymer mit schaltbarer Lesbarkeit
CN103910852A (zh) * 2014-03-04 2014-07-09 西安工程大学 可降解水性聚氨酯乳液及其制备方法
CN106832940A (zh) * 2017-01-24 2017-06-13 南京天朗制药有限公司 室温塑形形状记忆材料
CN106977726A (zh) * 2017-04-18 2017-07-25 长春工业大学 一种甲基乙烯基聚硅氧烷‑生物可降解聚酯嵌段共聚物
CN108503811A (zh) * 2018-04-26 2018-09-07 长春工业大学 一种赋予聚乳酸形状记忆的聚合物

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
YAJUN REN等: "Synthesis and characterization of lactose grafted polycaprolactone-polysiloxanepolycaprolactone copolymers", 《POLYMER INTERNATIONAL》 *
任亚君: "基于D4vi构筑嵌段共聚物功能化聚乳酸", 《中国优秀博硕士学位论文全文数据库(硕士)》 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113402866A (zh) * 2021-07-08 2021-09-17 长春工业大学 一种基于形状记忆调控药物释放的聚合物
CN115785650A (zh) * 2022-12-28 2023-03-14 扬州惠通新材料有限公司 一种丙交酯基的弹性聚氨酯水凝胶

Also Published As

Publication number Publication date
CN111548456B (zh) 2022-05-13

Similar Documents

Publication Publication Date Title
Lin et al. Study on shape‐memory behavior of polyether‐based polyurethanes. II. Influence of soft‐segment molecular weight
JP4999228B2 (ja) 押出可能な熱可塑性エラストマー性尿素鎖延長ポリウレタン
Kim et al. Waterborne polyurethanes and their properties
CN111548456B (zh) 一种赋予聚乳酸水诱导形状记忆的聚合物
Zhao et al. Formation of POSS-POSS interactions in polyurethanes: From synthesis, morphologies to shape memory properties of materials
CN109354671B (zh) 一种高固含量低黏度水性聚氨酯乳液的制备方法
JP2004529234A (ja) シラン末端化ポリジオルガノシロキサン−ウレタンコポリマー
US5589543A (en) Polyurethane elastomers prepared from difunctional telechelic linear non-crosslinked polyolefins
CN1221430A (zh) 多异氰酸酯改性异单烯烃－对烷基苯乙烯弹性体组合物
Wen et al. Development of humidity-responsive self-healing zwitterionic polyurethanes for renewable shape memory applications
KR20000015823A (ko) 압출 가능한 열가소성의 탄성 우레아 연장된 폴리우레탄
CN112521590A (zh) 离子型高分子量聚马来酸二元醇酯及其制备方法
CN108503811B (zh) 一种赋予聚乳酸形状记忆的聚合物
CN109988292B (zh) 一种可降解脂肪族共聚酯的制备方法
US11746194B2 (en) Method for preparing topological elastomers with highly branched structures, low modulus and high elasticity
Klinedinst et al. Structure—Property Behavior of New Segmented Polyurethanes and Polyureas Without Use of Chain Extenders
Xiao et al. A highly stretchable bioelastomer prepared by UV curing of liquid-like poly (4-methyl-ε-caprolactone) precursors
JPWO2010001898A1 (ja) 多分岐性ポリエステルの製造方法、ポリウレタンの製造方法、ポリウレタン
Xia et al. Design strategy for waterborne polyurethane with sodium sulfonate groups on the soft segments
CN113402866B (zh) 一种基于形状记忆调控药物释放的聚合物
CN108047416A (zh) 一种改性聚氨酯材料及其制备方法
PT866827E (pt) Novas amidas de poliester alifaticas resistentes a hidrolise sua preparacao e aplicacao
CN106397721A (zh) 一种含不饱和键的生物可降解聚氨酯的制备方法
KR100540817B1 (ko) 폴리염화비닐 가소제용 성형구조 지방족 폴리에스테르화합물 및 이를 포함하는 폴리염화비닐 블렌드
CN108587544B (zh) 一种端叠氮基聚己内酯粘合剂及其合成方法

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant