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Synthesis of a Poly(amide-imide)from 5,6-Diphenyl-1-chloroformyl3,4-benzenedicarboxylic Anhydride and Bis (4-aminophenyl)ether

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Chinese Chemical Letters 1999年第5期10卷 371-372页

作者： xi gao {2. Lin CHENG Hai Bin ZtlEN Zhi Yuan WANG(department of polymer science & materials. dalian university of technology. dalian 116012.0} of Chemistry. Carleton university. Ottawa. Canada) dalian Univ Technol Dept Polymer Sci & Mat Dalian 116012 Peoples R China Carleton Univ Dept Chem Ottawa ON K1S 5B6 Canada

A novel poly (amide-imide) was prepared from a novel monomer: 5,6-diphenyl-chloroformyl-3,4-benzenedicarboxylic anhydride and bis (4-aminophenyl) ether. The polymer was characterized by FTIR. (HNMR)-H-1. DSC and TGA.

关键词： poly (amide-imide) 5,6-diphenyl-chloroformyl-3,4-benzenedicarboxylic anhydride

Synthesis and Characterization of Poly (Aryl Ether Ketone) Containing Phthalazinone and Naphthalene Moieties

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Chinese Chemical Letters 2000年第9期11卷 777-778页

作者： Ye gao xi gao jian Jin Yan WANG department of polymer science, College of Chemical Engineering, dalian university of technology. dalian 116012 dalian Univ Technol Coll Chem Engn Dept Polymer Sci Dalian 116012 Peoples R China

A novel poly (aryl ether ketone) (PPEK) containing phthalazinone and naphthalene moieties was prepared by the nucleophilic displacement reaction of 4-(4-hydroxyphenyl) (2.) phthalazin-1-one with 1-chloro-4-(4-chlorobe... 详细信息

关键词： engineering thermoplastics poly (aryl ether ketone) synthesis

Unleashing the Power of Bio-based Thermotropic Liquid Crystal Modifiers:Toughening and Reinforcing Petroleum-based Epoxy Resin without Compromising Other Properties

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Chinese Journal of polymer science 2024年第8期42卷 1093-1102页

作者： Qing-Yun Lu Hong-Wei Gu Jia-Hui Li Qian-Qian Fan Bei-Tao Liu Yan Kou xi-gao {2. Zhi-Huan Weng State Key Laboratory of Fine Chemicals Frontiers Science Center for Smart MaterialsLiaoning Technology Innovation Center of High Performance Resin MaterialsDepartment of Polymer Science&EngineeringDalian University of TechnologyDalian 116024China Thermochemistry Laboratory Liaoning Province Key Laboratory of Thermochemistry for Energy and MaterialsDalian National Laboratory for Clean EnergyDalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China

Toughening the petroleum-based epoxy resin blends with bio-based modifiers without compromising their modulus,mechanical strength,and other properties is still a big challenge in view of the *** this study,a bio-based liquid crystal epoxy resin(THMT-E P)with an s-triazine ring structure was utilized to modify a petroleum-based bisphenol A epoxy resin(E51)with 4,4'-diaminodiphenylsulfone(DDS)as a curing agent,and the blended systems were evaluated for their thermal stability,mechanical properties,and flame *** results showed that the impact strength of the blended system initially increased and then decreased with the increase in THMT-EP content,and it reached the a maximum value of 2..5 kJ/m^(2.when the THMT-EP content was 5%,which was 31.2.higher than that of E51/***,the flexural strength,modulus,and glass transition tem perature of the blended system were all simultaneously improved with the addition of *** the same time,the addition of THMT-EP enhanced the flame retardancy of the system by increasing the char yield at 700℃and decreasing the peak heat release rate and total heat release *** work paves the way for a more sustainable improvement in the comprehensive performance of epoxy resin.

关键词： Epoxy resin Toughening Bio-based Thermotropic liquid crystal

SYNTHESIS AND CHARACTERIZATION OF PHTHALAZINONE POLY(ARYL ETHER SULFONE KETONE)WITH CARBONYL GROUP

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Chinese Journal of polymer science 2002年第3期20卷 225-229页

作者： Ying-nan Xuan Yan gao Yong Huang xi-gao jian Laboratory of Cellulose and Lignocellulosics Chemistry Guangzhou Institute of Chemistry Chinese Academy of sciences, Guangzhou 510650 China Institute of Chemistry Chinese Academy of sciences, Beijing 100080 China department of polymer science, College of Chemical Engineering dalian university of technology. dalian 116012. China Chinese Acad Sci Guangzhou Inst Chem Lab Cellulose & Lignocellulos Chem Guangzhou 510650 Peoples R China Chinese Acad Sci Inst Chem Beijing 100080 Peoples R China dalian Univ Technol Coll Chem Engn Dept Polymer Sci Dalian 116012 Peoples R China

A kind of novel heat-resistant, high performance engineering thermoplastic phthalazinone poly(aryl ether sulfone ketone) (PPESK) containing a carboxyl group in its side chain was prepared by the nucleophilic displacement reaction of 4-(4-hydroxylphenyl)- 1 (2.)-phthalazinone with di(4-chlorophenyl) sulfone, 4,4'-difluoro-benzophenone and phenolphthalin in sulfolane in the presence of K2.O3 to produce high molecular weight polymers which can be dissolved in some polar solvents such as chloroform and nitrobenzene at room temperature and can be easily cast into flexible, yellowish and transparent films. PPESK is an amorphous polymer having a decomposition temperature above 400degreesC, which indicates that it has high thermal stability. At the same time, the thermal properties of PPESKs with dicyandiamide (DICY) as curing agent indicated that the heat-resistance properties of the PPESKs are improved after curing. The apparent activation energy (A-E) of the cross-linking reaction and the reaction order (n) of PPESK/DICY were found to be 52.2.kJ/mol and ca. 1.0, respectively. Therefore, the cross-linking reaction is approximately a first order reaction.

关键词： poly(aryl ether sulfone ketone) synthesis active pendant group

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聚醚砜酮薄膜在炭化过程中化学结构的变化

新型炭材料 2004年第1期19卷 49-52页

作者：朱桂茹王同华张守海宋成文蹇锡高蔡天锡大连理工大学化工学院材料化工系辽宁大连116012 大连理工大学化工学院高分子材料化工系辽宁大连116012

　用傅里叶变换红外光谱法研究了聚醚砜酮薄膜试样在氩气氛中,室温至950℃热解过程中固体残留物的内部结构的转变。根据谱带的变化规律,提出了试样在热解炭化时会沿着二氮杂萘环的N N键断裂,形成共轭腈基及异氰基的苯环化合物。异氰基... 详细信息

　用傅里叶变换红外光谱法研究了聚醚砜酮薄膜试样在氩气氛中,室温至950℃热解过程中固体残留物的内部结构的转变。根据谱带的变化规律,提出了试样在热解炭化时会沿着二氮杂萘环的N N键断裂,形成共轭腈基及异氰基的苯环化合物。异氰基化合物进一步二聚成二苯基碳化二亚胺,后者又聚合生成含氮杂环的多环芳烃。继续热解炭化会导致芳杂环的合并和脱除HCN等气态小分子,生成连续巨大的含氮杂芳环多环化合物。再经稠环芳构化最终得到具有芳环层面结构的大分子固态残留物。

关键词：聚醚砜酮薄膜炭化过程化学结构傅里叶变换红外光谱氩热解过程固体残留物 N-N键膜材料

氯甲基化/季铵化新型聚芳醚砜酮超滤膜的研制

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水处理技术 2004年第3期30卷 125-127,143页

作者：张守海蹇锡高苏仪张丽荣大连理工大学化工学院高分子材料系辽宁大连116012

本文对含二氮杂萘结构聚芳醚砜酮进行改性制得氯甲基化聚芳醚砜酮。选用 N- 甲基 -2. 吡咯烷酮作制膜溶剂,依据正交设计方法制得了一系列氯甲基化聚芳醚砜酮超滤膜。考察了聚合物浓度、添加剂种类和添加量以及制膜蒸发时间等对膜性能的... 详细信息

本文对含二氮杂萘结构聚芳醚砜酮进行改性制得氯甲基化聚芳醚砜酮。选用 N- 甲基 -2. 吡咯烷酮作制膜溶剂,依据正交设计方法制得了一系列氯甲基化聚芳醚砜酮超滤膜。考察了聚合物浓度、添加剂种类和添加量以及制膜蒸发时间等对膜性能的影响。将氯甲基化聚芳醚砜酮超滤膜浸入三甲胺溶液进行季铵化反应,得季铵化聚芳醚砜酮超滤膜。并考察了膜的抗污染性。

关键词：聚芳醚砜酮季胺化超滤膜氯甲基化聚砜生产技术

Allyl phthalazinone synthesis,polymerization and polymer properties

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Chinese Chemical Letters 2014年第4期25卷 605-608页

作者： Li-Ming Dong xi-gao {2. School of Chemistry & Chemical Engineering Xuzhou Institute of Technology department of polymer {2. & materials Dalian University of Technology

A phthalazinone monomer with an allyl group, i.e. 4-（3-allyl-4-hydroxyphenyl）phthalazin-1（2.）-one, was synthesized and then copolymerized with 4-（4-hydroxylphenyl）（2.）-phthalazin-1-one and 2.6- diflurobenzonitrile by means of aromatic nucleophilic polycondensation to provide a series of crosslinkable poly（aryl ether nitrile）s. The virgin copolymers exhibited good solubility in polar organic solvents with relative high molecular weights （Mw： 45,130-58,403, inherent viscosities： 0.58-0.75 dL/ g）. After cross-linking, the thermal stability and solvent resistance of the polymer increased.

关键词： Poly(aryl ether nitrile) Crosslinking Phthalazinone

New sustainable polymers with on-demand depolymerization property

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science China Chemistry 2024年第9期67卷 2803-2841页

作者： Yangyang Sun Zesheng An Yanshan gao Rongrong Hu Ye Liu Hua Lu xiao-Bing Lu Xuan Pang Anjun Qin Yong Shen Youhua Tao Yu-Zhong Wang Junpeng Wang Gang Wu Guang-Peng Wu Tie-Qi Xu xing-Hong Zhang Yuetao Zhang Zhenbiao Zhang jian-Bo Zhu Miao Hong Zhibo Li State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic ChemistryChinese Academy of SciencesShanghai 200032China State Key Laboratory Base of Eco-Chemical Engineering College of Chemical EngineeringQingdao University of Science and TechnologyQingdao266042China State Key Laboratory of Supramolecular Structure and materials College of ChemistryJilin UniversityChangchun 130012China State Key Laboratory of Luminescent materials.and Devices Guangdong Provincial Key Laboratory of Luminescence from Molecular AggregatesSouth China University of TechnologyGuangzhou 510640China State Key Laboratory of Fine Chemicals Frontiers Science Center for Smart MaterialsDalian University of TechnologyDalian 116024China Beijing National Laboratory for Molecular sciences Center for Soft Matter Science and EngineeringKey Laboratory of Polymer Chemistry and Physics of Ministry of EducationCollege of Chemistry and Molecular EngineeringPeking UniversityBeijing 100871China Key Laboratory of polymer Ecomaterials Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China The Collaborative Innovation Center for Eco-Friendly and Fire-Safety polymeric materials.MoE) National Engineering Laboratory of Eco-Friendly Polymeric Materials(Sichuan)College of ChemistryState Key Laboratory of Polymer Materials EngineeringSichuan UniversityChengdu 610064China School of polymer science and polymer Engineering the University of AkronAkronOH 44325USA MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and EngineeringZhejiang UniversityHangzhou 310027China State and Local Joint Engineering Laboratory for Novel Functional polymeric materials Jiangsu Key Laboratory of Advanced Functional Polymer Design and ApplicationSuzhou Key Laboratory of Macromolecular Design and Precision SynthesisCollege of ChemistryChemical Engineering and Materials ScienceSoochow UniversitySuzhou 215123China

To combat the crisis of today's synthetic polymers arising from unsustainable production and disposal,it is essential for the synthetic polymer community to reshape the current polymer industry with sustainable *** an emerging class of sustainable polymers,the development of chemically depolymerizable polymers(CDPs),which can undergo closed-loop depolymerization/repolymerization cycles to reproduce virgin polymers without the loss of properties from recovered monomers,offers an ideal solution to preserve finite natural resources,provides a feasible solution to the end-of-life issue of polymer waste,and thereby establishes a circular materials.***,two grand key challenges have been encountered in the establishment of practically useful CDPs:how to balance polymerization and depolymerization ability and how to unify conflicted depolymerizability and physical ***,this critical review article presents our vision for summarizing feasible strategies to overcome the above two significant challenges and the design principles for constructing an ideal CDP by highlighting selected major progress made in this rapidly expanding field.

关键词： chemically depolymerizable polymers sustainable polymers depolymerization monomer recovery degradation plastics

Synthesis, Characterization and Properties of Poly(aryl amides) Containing Methoxy Substituted Phthalazinone Moiety

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Chinese Chemical Letters 2005年第10期16卷 1324-1326页

作者： Pei WANG jian Dong LIU xi {2. jian department of polymer {2. ＆ materials Dalian University of Technology Dalian 116012

A novel aromatic diamine, 1, 2.dihydro-2.（4-aminophenyl）-4-[3-methoxy-4-（4-aminophenoxy）]-2. 3-phthalazin-l-one （OO-DA） containing aza heterocyclic structure was synthesized from the bisphenol-like monomer in two steps and used for preparing new aromatic polyamides with high inherent viscosity of 0.89-1.03 dL.g^-1. The structures of diamine and polymers obtained were confirmed by MS, PT-IR, WAXD and ^1H-NMR. The synthesized polymers exhibited high glass transition temperature in the range of 2.1-307℃ and good solubility in polar solvents.

关键词： Poly(ether amides) phthalazinone solubility.