1、车载用透明功能高分子材料

2、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6项，企事业单位委托项目10余项，重点研究开发了车载用功能高分子材料、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*, et al. Preparation and properties of oriented microcellular Poly(L-lactic acid) foaming material. International Journal of Biological Macromolecules, 2022.

2. Yueling Chen, Wenchao Yang, Zhengqiu Li*, et al. Bionic structure and biocompatibilities of long chain branched poly(L-lactic acid) oriented microcellular foaming material. International Journal of Biological Macromolecules, 2024.

3. Wenchao Yang, Ting Wu, Zhengqiu Li*, et al. Bionic structure and biocompatibility of highly oriented homo-epitaxially crystallized poly(lactic acid). International Journal of Biological Macromolecules, 2023.

4. Yihong Li, Yanjun Feng, Zhengqiu Li*, et al. Preparation and Antibacterial Properties of Poly (l-Lactic Acid)-Oriented Microporous Materials. Biomolecules, 2024.

5. Yihong Li, Zhixin Zhao, Zhengqiu Li*, et al. Preparation and properties of polydimethylsiloxane-regulated oriented microporous poly (L-lactic acid) biomimetic bone repair materials. International Journal of Biological Macromolecules, 2024.

6. Zhengqiu Li, Yueling Chen, Wenchao Yang, et al. In vitro degradation behavior of oriented microcellular poly(L-lactic acid) biomimetic materials, AIP advances, 2024

7. 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.

8. 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.

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

10. 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.

11. 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

12. 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

13. 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.

14. 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.

15. 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.

16. 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

17. 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.

18. Li Z Q, Ran L C, Lang Y, et al. Preparation and Photo-Oxidation Aging Behavior of Oriented Polylactic Acid[J]. International Polymer Processing, 2021, 36(4): 451-458.

19.  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.

20. 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.

21. Zhang J, Huang J, Huang K, et al. Egg white coated alginate nanoparticles with electron sprayer for potential anticancer application[J]. International journal of pharmaceutics, 2019, 564: 188-196.

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

23. 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.

24. 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，350VIP浦京集团学报，2019年9月。

25. 李正秋，赵晓文，叶林，支化聚乳酸的微纤化及其结构与血液相容性研究，2014年全国高分子材料科学与工程研讨会，中国成都，2014年10月。

26. 李正秋，黄欢，崔艳杰，黄川南，梁玉祥，利用煤泥研制具有肥效的生态缓释材料，应用化工，2011-11。

27. 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。

28. 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。

29. 黄晴宜，石暄，陈伟，罗岑怡，赵志新，李正秋，聚乳酸立构复合晶的加工成型进展，塑料，2024年5月。

30. 何晓莉,龚芮,杨秀英,唐娜,李正秋，聚乳酸降解行为和抗老化改性研究进展.工程塑料应用，2022年6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，叶敬彪，宋向前，金英，金洪雨，一种透明耐热自增强聚乳酸材料及其制备方法,已授权，申请号： 202210293917.X

4. 李正秋，陈本德，明媚，一种防渗出再生橡胶及其制备方法，已授权，申请号：202211618545.

5. 李正秋，赵志新，郎赟，刘蕾，黄晴宜，罗岑怡，李仪泓，阳渝娅，朱桉邑，陈伟，一种高联通聚乳酸微球及其制备方法与应用，中国发明专利，申请号：CN118955955A

6. 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

7. 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

8. 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

9. 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。

10. 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，已授权，申请号：201711169137.X。

主讲：高分子材料改性，高分子材料结构与性能，波谱分析，功能材料

金龙计划创新人才

350VIP浦京集团青年学者后备人才

350VIP浦京集团青年教师讲课比赛三等奖

四川省国际大学生创新大赛 优秀指导教师

创客中国四川德阳赛区二等奖

350VIP浦京集团优秀教学奖