1、医用高分子材料

2、智能响应、生态环境高分子材料

3、高分子特种加工成型技术

4、阻燃工程塑料

先后主持国家自然科学基金、四川省科技厅项目等省部级以上项目5项，主研中英桥国际合作与企事业单位委托项目10余项，重点参与了透明耐热聚乳酸、生物医用聚氯乙烯、轻量化复合聚甲醛、聚氨酯产品研究等横向课题项目。在《International Journal of Biological Macromolecules》、《Chemical Engineering Journal》、《Polymer》、《European Polymer Journal》、《Journal of Biomedical Materials Research Part A》、《Journal of Industrial and Engineering Chemistry》等国际知名SCI期刊发表论文20余篇，申报国家专利20余项。

发表SCI论文

1.Yueling Chen, Wenchao Yang, Zhengqiu Li*, Preparation and properties of oriented microcellular Poly(L-lactic acid) foaming material. International Journal of Biological Macromolecules, 2022.

2.Zhengqiu Li, Ting Wu, Chen B, et al. Oriented homo-epitaxial crystallization of polylactic acid displaying a biomimetic structure and improved blood compatibility. Journal of Biomedical Materials Research Part A, 2021.

3.Zhengqiu Li, Jianbin Li, Yueling Chen, et al. Flame retardant and mechanical properties of core-shell-like polybutylene terephthalate/intumescent flame retardant through controlling injection time. POLYMERS FOR ADVANCED TECHNOLOGIES, 2022.

4.Zhengqiu Li, Liu Lei*, Rao Y, et al. Mechanical and antibacterial properties of oriented poly (lactic acid). Polymer Engineering & Science, 2019.

5.Zhengqiu Li, Liu Lei*, Chen B, et al. Structure and antimicrobial properties of long chain branched poly (lactic acid). Journal of Biomedical Materials Research Part A, 2019.

6.Zhengqiu Li, Li Liao, Baoshu Chen*, et al. Preparation, structure and flame retardancy of poly(butylene terephthalate) with gradient intumescent flame retardant distrbution, Materials Express, 2019

7. Zhengqiu Li, Wen Li, Baoshu Chen*, et al. Preparation and properties of polybutylene-terephthalate/graphene oxide in situ flame-retardant material, Journal of Applied Polymer Science, 2020

8. Zhengqiu Li, Xiaowen Zhao*, Lin Ye, Phil Coates, Fin Caton-Rose, Michasel Martyn, Fibrillation of chain branched poly (lactic acid) with improved blood compatibility and bionic structure, Chemical Engineering Journal. 2015 (279): 767-776.

9. Zhengqiu Li, Xiaowen Zhao*, Lin Ye, Phil Coates, Fin Caton-Rose, Michasel Martyn, Structure and blood compatibility of highly oriented poly (l-lactic acid) chain extended by ethylene glycol diglycidyl ether, Polymer. 2015 (56): 523-534.

10. Zhengqiu Li, Xiaowen Zhao*, Lin Ye, Phil Coates, Fin Caton-Rose, Michasel Martyn, High orientation of long chain branched poly (lactic acid) with enhanced blood compatibility and bionic structure, Journal of Biomedical Materials Research Part A. 2016 (104): 1082-1089.

11. Zhengqiu Li, Xiaowen Zhao*, Lin Ye, Phil Coates, Fin Caton-Rose, Michasel Martyn, Structure and Biocompatibility of Highly Oriented Poly(lactic acid) Film Produced by Biaxial Solid Hot Stretching, Journal of Industril and Engineering Chemistry. 2017 (52): 338-348

12. Zhengqiu Li, Xiaowen Zhao*, Lin Ye, Phil Coates, Fin Caton-Rose, Michasel Martyn, Structure and blood compatibility of highly oriented PLA/MWNTs composites produced by solid hot drawing, Journal of Biomaterials Applications. 2014 (28): 978-989.

13. Jiafeng Li, Zhengqiu Li, Lin Ye, Xiaowen Zhao*, Phil Coates, Fin Caton-Rose, Michasel Martyn, Structure evolution and orientation mechanism of long-chain-branched poly (lactic acid) in the process of solid die drawing, European Polymer Journal, 2017 (90): 54-65.

14. Jiafeng Li, Zhengqiu Li, Lin Ye, Xiaowen Zhao*, Phil Coates, Fin Caton-Rose, Michasel Martyn, Structure and biocompatibility improvement mechanism of highly oriented poly(lactic acid) produced by solid die drawing, European Polymer Journal, 2017 (97): 68-76.

15. Zhengqiu Li, Lin Ye, Xiaowen Zhao, Structure and Blood Compatibility of Highly Oriented Poly(lactic acid), Polymer process engineering ’15, Bradford, UK, 2015.9.

16. Zhengqiu Li, Xiaowen Zhao, Lin Ye, Structure and biocompatibility of highly oriented poly(lactic acid) film produced by two-dimensional hot stretching, 2016 Polymer Processing Society Asia/Australia Conference (PPS-2016), Chengdu, China, 2016.10.

17. 李正秋，曹智文，PLA/TiO₂复合抗紫外老化材料的结构与性能研究，必赢bwin线路检测中心学报，2019年9月。

18. 张浩琴， 李正秋*等，透明耐热聚乳酸材料改性研究进展，工程塑料应用，2021年8月。

19. 陈月铃， 李正秋*等，纳米层状阻燃复合材料的制备及研究进展，工程塑料应用，2019年10月。

申请专利：

1. 李正秋，陈宝叔，赵天宝，张义，刘蕾，彭娅，一种聚乳酸取向微孔发泡材料及其制备方法，中国发明专利，已授权，申请号：201810855695.X

2.李正秋，李见斌，陈宝书，一种多尺度层状阻燃材料及其制备方法，中国发明专利，已授权，申请号：201910677878.1

3. 李正秋，赵天宝，陈宝叔，刘蕾，曹智文，彭娅，一种具有长效抗菌功效的聚乳酸材料的制备方法，中国发明专利，申请号：201810855707.9

4. 李正秋，冉隆昌，吴婷，曹智文，袁筱蝶，刘蕾，一种防撞墙纸用聚乳酸硬质泡沫及其制备方法，中国发明专利，申请号：201811563685.5

5. 陈宝书，赵天宝，李正秋，廖力，一种蒙脱土复合阻燃材料及其制备方法，中国发明专利，申请号：201711229300.7

6. 陈宝书，赵天宝，李正秋，廖力，一种膨胀阻燃剂及其制备方法，中国发明专利，申请号：201711227772.9

7. 陈宝书，赵天宝，李正秋，廖力，一种热塑性轻量化复合材料及其制备方法，中国发明专利，申请号：201711227771.4

8. 陈宝书，赵天宝，李正秋，廖力，一种碳纤维增强树脂基的高性能轻量化复合材料及其制备方法，中国发明专利，申请号：201711227409.7

9. 陈宝书，赵天宝，李正秋，廖力，一种微胶囊型阻燃剂及其制备方法，中国发明专利，申请号：201711227407.8

10. 陈宝书，赵天宝，李正秋，廖力，一种阻燃纳米复合材料及其制备方法，中国发明专利，申请号：201711230642.0

11. 陈宝书，赵天宝，李正秋，毛良东，李见斌，廖力，一种聚氨酯泡沫保温装饰一体板及其制备方法，中国发明专利，申请号：201910648362.4

12. 陈宝书，李正秋，赵天宝，李见斌，毛良东，廖力，一种阻燃耐高温聚酰亚胺复合材料及其制备方法，中国发明专利，申请号：201910648440.0

13. 陈宝书，李正秋，赵天宝，李见斌，毛良东，廖力，一种阻燃聚苯并咪唑酰亚胺复合材料及其制备方法，中国发明专利，申请号：201910647021.5

14.李正秋，秦霸等，一种智能泄洪井盖，中国实用新型专利，申请号：201822087988.6

15.李正秋，李见斌，陈宝书，一种多尺度层状阻燃材料及其制备方法，中国发明专利，申请号：201910677878.1

16. 赵晓文，叶林，李正秋，一种表面具有仿生结构的血液相容性聚乳酸自增强材料及其制备方法，中国发明专利，申请号：20151050504542.7。

17.赵晓文，刘亚龙，叶林，李正秋，一种高强聚乳酸骨固定材料及其制备方法，中国发明专利，申请号：201711169137.X。

主讲：高分子材料改性，塑料成型工艺，聚合物共混原理，热工基础

必赢bwin线路检测中心青年学者后备人才

必赢bwin线路检测中心青年教师讲课比赛三等奖

创客中国四川德阳赛区二等奖

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