Study of the Synthesis of CO<sub>2</sub>/Propylene Epoxide/Phthalic Anhydride Terpolymers with Different Sequence Structures and Their Properties

Cong-xiao Fan; Jia-xin Liang; Shu-xian Ye; Yong-lan Zhu; Shuan-jin Wang; Yue-zhong Meng; Min Xiao

doi:10.11777/j.issn1000-3304.2021.21402

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Study of the Synthesis of CO₂/Propylene Epoxide/Phthalic Anhydride Terpolymers with Different Sequence Structures and Their Properties

Research Article | 更新时间：2024-10-08

- Study of the Synthesis of CO₂/Propylene Epoxide/Phthalic Anhydride Terpolymers with Different Sequence Structures and Their Properties
- ACTA POLYMERICA SINICA Vol. 53, Issue 5, Pages: 497-504(2022)
- 作者机构：
  
  广东省低碳化学与过程节能重点实验室中山大学材料科学与工程学院广州 510006
- 作者简介：
  
  Min Xiao, E-mail: stsxm@mail.sysu.edu.cn
- 基金信息：
- DOI：10.11777/j.issn1000-3304.2021.21402
  CLC：
- Published：20 May 2022，
  
  Published Online：21 March 2022，
  
  Received：29 December 2021，
  
  Accepted：08 February 2022
- 稿件说明：
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樊丛笑,梁嘉欣,叶淑娴等.不同序列结构的二氧化碳/环氧丙烷/邻苯二甲酸酐三元共聚物的可控合成及性能研究[J].高分子学报,2022,53(05):497-504.

Fan Cong-xiao,Liang Jia-xin,Ye Shu-xian,et al.Study of the Synthesis of CO₂/Propylene Epoxide/Phthalic Anhydride Terpolymers with Different Sequence Structures and Their Properties[J].ACTA POLYMERICA SINICA,2022,53(05):497-504.
樊丛笑,梁嘉欣,叶淑娴等.不同序列结构的二氧化碳/环氧丙烷/邻苯二甲酸酐三元共聚物的可控合成及性能研究[J].高分子学报,2022,53(05):497-504. DOI： 10.11777/j.issn1000-3304.2021.21402.

Fan Cong-xiao,Liang Jia-xin,Ye Shu-xian,et al.Study of the Synthesis of CO₂/Propylene Epoxide/Phthalic Anhydride Terpolymers with Different Sequence Structures and Their Properties[J].ACTA POLYMERICA SINICA,2022,53(05):497-504. DOI： 10.11777/j.issn1000-3304.2021.21402.

摘要

利用非金属催化体系，分别通过一锅两步法和一锅一步法，实现了二氧化碳(CO

)、环氧丙烷(PO)和邻苯二甲酸酐(PA)的本体聚合. 通过反应条件优化获得了3种聚酯(PE)链段摩尔组成和分子量较为相近，但分别具有嵌段、梯度和无规序列结构的聚酯-聚碳酸酯共聚物(PPC-P). 通过示差扫描量热法(DSC)、热重分析(TGA)以及拉伸试验对3种不同序列结构的PPC-P进行了热性能和力学性能的比较，其中嵌段PPC-P存在2个玻璃化温度(43和54 ℃)，而梯度、无规PPC-P只存在一个玻璃化温度(分别为51和50 ℃). 嵌段PPC-P的5%失重温度比无规和梯度PPC-P的低10 ℃，说明其热分解稳定性稍差一些. 3种序列结构的PPC-P抗拉性能相当，拉伸强度达到35 MPa，都属于硬而脆的材料.

Abstract

Producing biodegradable plastics from CO

is a promising methodology for recycling industrial waste gas

and the conservation of environment and energy. Propylene oxide (PO) has been commonly used to copolymerize with CO

to yield biodegradable poly(propylene carbonate) (PPC). PPC exhibits excellent transparency

low water and oxygen permeability as well as high flexibility. But low glass transition temperature (

) limited its practical applications. In recent years

the copolymerization of PO

with phthalic anhydride (PA) provides a robust and economical method to improve PPC's thermal and mechanical performance. In this study

to explore the relationship between the sequence structure and the properties of CO

/PO/PA terpolymer (PPC-P)

PPC-P terpolymers with similar polyester (PE) content and molecular weight but different sequence structures (block

tapered and random) were synthesized through one-pot two-step method or one-pot one-step method using non-metallic catalytic system (TEB/PPNCl). The effects of polymerization temperature and reaction time on the composition and molecular weight of the PPC-P were systematically studied

and the PE content and molecular weight of all the terpolymers were controlled to be around 45% and 5.0×10

respectively for comparison. The typical sequence structure characteristics of the terpolymers were proven by

H-NMR. Differential scanning calorimetry (DSC)

thermogravimetric analysis (TGA) and tensile test were used to characterize the thermal and mechanical properties of the PPC-P terpolymers. The block terpolymer shows two g

lass-transition temperature (

) (43 and 54 ℃)

while the tapered and random terpolymer has only one

(51

50 ℃). The

of the block terpolymer (263 ℃) is lower than that of the tapered and random terpolymer (around 273 ‍℃)

indicating the poorer thermostability of block terpolymer. The three terpolymers with different sequence structures have similar tensile strength (around 35 MPa)

all belonging to hard and brittle materials.

关键词

二氧化碳基聚合物序列结构热学性能力学性能

Keywords

CO2 based copolymerSequence structureThermal propertiesMechanical properties

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Jiangmen Key Laboratory of Polymer Intelligent Manufacturing, Wuyi University

School of Material Science and Engineering, Northeast Forestry University

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Department of Polymer Science and Engineering, Zhejiang University

College of Materials Science and Engineering, Qingdao University

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Study of the Synthesis of CO2/Propylene Epoxide/Phthalic Anhydride Terpolymers with Different Sequence Structures and Their Properties

DOI：10.11777/j.issn1000-3304.2021.21402

摘要

Abstract

关键词

Keywords

references

Study of the Synthesis of CO₂/Propylene Epoxide/Phthalic Anhydride Terpolymers with Different Sequence Structures and Their Properties