Effect of amorphous microphase on structural evolution of polypropylene membrane at hot stretching
This work is aimed at researching the effect of amorphous microphase on structural evolution of polypropylene (PP) membrane at hot stretching. Herein, the functioned copolymer PPO(nPe)0.75-(Py)0.25 (PPOR) was synthesized to introduce the amorphous microphase, enriched region formed by physical cross...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-07-01
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| Series: | Polymer Testing |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0142941825001412 |
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| author | Ming Xie Licheng Wang Hao Li Liuxiang Zhan Mingyuan Li Zhengguo Cai Junfen Sun Long Chen |
| author_facet | Ming Xie Licheng Wang Hao Li Liuxiang Zhan Mingyuan Li Zhengguo Cai Junfen Sun Long Chen |
| author_sort | Ming Xie |
| collection | DOAJ |
| description | This work is aimed at researching the effect of amorphous microphase on structural evolution of polypropylene (PP) membrane at hot stretching. Herein, the functioned copolymer PPO(nPe)0.75-(Py)0.25 (PPOR) was synthesized to introduce the amorphous microphase, enriched region formed by physical crosslink, in PP/PPOR membrane by melt-stretching. The aggregated structure evolution led to the structure and performance modification of blending membrane. First, the amorphous microphase resulted in the amorphous thickness of the PP/PPOR film decreasing by 26.7 %. During the hot stretching process, the micropore formation was accompanied by a decrease of crystal length and an increase of amorphous orientation in the PP membrane. However, the presence of amorphous microphase reduced crystal destruction and amorphous orientation in the PP/PPOR membrane, which contributes to a greater region of micropore and a smaller pore size. Eventually, compared with pure PP membrane, the porosity of PP/PPOR membrane increased by 21.7 % at maximum and the lithium-ion conductivity of the PP/PPOR-10 membrane was enhanced by 13.0 %. This work provides a practical way from molecular design to separator design. |
| format | Article |
| id | doaj-art-57c5fa1dbe8b4e19a87f6b188a2f2608 |
| institution | OA Journals |
| issn | 1873-2348 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Polymer Testing |
| spelling | doaj-art-57c5fa1dbe8b4e19a87f6b188a2f26082025-08-20T02:15:11ZengElsevierPolymer Testing1873-23482025-07-0114810882710.1016/j.polymertesting.2025.108827Effect of amorphous microphase on structural evolution of polypropylene membrane at hot stretchingMing Xie0Licheng Wang1Hao Li2Liuxiang Zhan3Mingyuan Li4Zhengguo Cai5Junfen Sun6Long Chen7State Key Laboratory of Advance Fiber Materials, College of Material Science and Engineering, Donghua University, North People Road 2999, Shanghai, 201620, PR ChinaState Key Laboratory of Advance Fiber Materials, College of Material Science and Engineering, Donghua University, North People Road 2999, Shanghai, 201620, PR ChinaState Key Laboratory of Advance Fiber Materials, College of Material Science and Engineering, Donghua University, North People Road 2999, Shanghai, 201620, PR ChinaEngineering Research Center of Technical Textile, Ministry of Education, Donghua University, Shanghai, 201620, PR ChinaState Key Laboratory of Advance Fiber Materials, College of Material Science and Engineering, Donghua University, North People Road 2999, Shanghai, 201620, PR ChinaState Key Laboratory of Advance Fiber Materials, College of Material Science and Engineering, Donghua University, North People Road 2999, Shanghai, 201620, PR China; Corresponding author.State Key Laboratory of Advance Fiber Materials, College of Material Science and Engineering, Donghua University, North People Road 2999, Shanghai, 201620, PR China; Corresponding author.State Key Laboratory of Advance Fiber Materials, College of Material Science and Engineering, Donghua University, North People Road 2999, Shanghai, 201620, PR China; Corresponding author.This work is aimed at researching the effect of amorphous microphase on structural evolution of polypropylene (PP) membrane at hot stretching. Herein, the functioned copolymer PPO(nPe)0.75-(Py)0.25 (PPOR) was synthesized to introduce the amorphous microphase, enriched region formed by physical crosslink, in PP/PPOR membrane by melt-stretching. The aggregated structure evolution led to the structure and performance modification of blending membrane. First, the amorphous microphase resulted in the amorphous thickness of the PP/PPOR film decreasing by 26.7 %. During the hot stretching process, the micropore formation was accompanied by a decrease of crystal length and an increase of amorphous orientation in the PP membrane. However, the presence of amorphous microphase reduced crystal destruction and amorphous orientation in the PP/PPOR membrane, which contributes to a greater region of micropore and a smaller pore size. Eventually, compared with pure PP membrane, the porosity of PP/PPOR membrane increased by 21.7 % at maximum and the lithium-ion conductivity of the PP/PPOR-10 membrane was enhanced by 13.0 %. This work provides a practical way from molecular design to separator design.http://www.sciencedirect.com/science/article/pii/S0142941825001412PP membranePhysical crosslinkAmorphous microphasePorosity |
| spellingShingle | Ming Xie Licheng Wang Hao Li Liuxiang Zhan Mingyuan Li Zhengguo Cai Junfen Sun Long Chen Effect of amorphous microphase on structural evolution of polypropylene membrane at hot stretching Polymer Testing PP membrane Physical crosslink Amorphous microphase Porosity |
| title | Effect of amorphous microphase on structural evolution of polypropylene membrane at hot stretching |
| title_full | Effect of amorphous microphase on structural evolution of polypropylene membrane at hot stretching |
| title_fullStr | Effect of amorphous microphase on structural evolution of polypropylene membrane at hot stretching |
| title_full_unstemmed | Effect of amorphous microphase on structural evolution of polypropylene membrane at hot stretching |
| title_short | Effect of amorphous microphase on structural evolution of polypropylene membrane at hot stretching |
| title_sort | effect of amorphous microphase on structural evolution of polypropylene membrane at hot stretching |
| topic | PP membrane Physical crosslink Amorphous microphase Porosity |
| url | http://www.sciencedirect.com/science/article/pii/S0142941825001412 |
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