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| Format: | Artículo Open Access |
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Wiley
2026
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| Online Access: | https://onlinelibrary.wiley.com/doi/10.1002/app.70310 |
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| _version_ | 1867019131772993536 |
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| author | Zhoufeng Wang Wenlong Yao Wenchi Zhang Puxi Zheng |
| author_facet | Zhoufeng Wang Wenlong Yao Wenchi Zhang Puxi Zheng Zhoufeng Wang Wenlong Yao Wenchi Zhang Puxi Zheng |
| collection | Wiley Open Access |
| contents | Elucidating Ortho‐Methyl Positioning Effects on Decomposition Pathways in Soluble Copolyarylates: A Synergistic Optimization of Solubility and Thermal Property Regulation Zhoufeng Wang Wenlong Yao Wenchi Zhang Puxi Zheng Journal of Applied Polymer Science ABSTRACT Optically transparent amorphous copolyarylates based on tetramethylbisphenol A (TMBPA) and bisphenol B (BPB) were synthesized via low‐temperature interfacial polymerization. These copolyarylates exhibited high solubility, with number average molecular weight ( M n ) of 1.48 × 10 4 –1.92 × 10 4 g/mol, weight average molecular weight ( M w ) of 6.64 × 10 4 –9.13 × 10 4 g/mol, polydispersity index (PDI) of 3.45–5.89, and intrinsic viscosity of 0.62–0.83 dL/g. Incorporation of TMBPA alters the thermal properties of the copolyarylates, decreasing thermal stability ( T 5% ) from 473.4°C to 444.4°C and char yield from 34.6% to 19.7%, but increasing the glass transition temperature ( T g ) from 202.9°C to 234.1°C. TG/FTIR and Py‐GC/MS analysis revealed that methyl groups adjacent to the phenolic hydroxyl group promoted chain breakage and accelerated thermal decomposition. The main gaseous products included H 2 O, CO 2 , CO, CH 4 , and phenolic compounds. Tensile strength, tensile modulus, and elongation at break of copolyarylates ranged from 51.83 to 60.21 MPa, 1023.28 to 1283.14 MPa, and 32.9% to 53.6%, respectively. This study highlighted the solubility‐thermal property balance, providing insights for designing processable high‐performance polyarylates. 10.1002/app.70310 http://onlinelibrary.wiley.com/termsAndConditions#vor |
| doi_str_mv | 10.1002/app.70310 |
| format | Artículo Open Access |
| id | wiley_oa_10_1002_app_70310 |
| institution | Wiley Open Access |
| license_str_mv | http://onlinelibrary.wiley.com/termsAndConditions#vor |
| publishDate | 2026 |
| publisher | Wiley |
| record_format | wiley_oa |
| spellingShingle | Elucidating Ortho‐Methyl Positioning Effects on Decomposition Pathways in Soluble Copolyarylates: A Synergistic Optimization of Solubility and Thermal Property Regulation Zhoufeng Wang Wenlong Yao Wenchi Zhang Puxi Zheng Journal of Applied Polymer Science Elucidating Ortho‐Methyl Positioning Effects on Decomposition Pathways in Soluble Copolyarylates: A Synergistic Optimization of Solubility and Thermal Property Regulation Zhoufeng Wang Wenlong Yao Wenchi Zhang Puxi Zheng Journal of Applied Polymer Science ABSTRACT Optically transparent amorphous copolyarylates based on tetramethylbisphenol A (TMBPA) and bisphenol B (BPB) were synthesized via low‐temperature interfacial polymerization. These copolyarylates exhibited high solubility, with number average molecular weight ( M n ) of 1.48 × 10 4 –1.92 × 10 4 g/mol, weight average molecular weight ( M w ) of 6.64 × 10 4 –9.13 × 10 4 g/mol, polydispersity index (PDI) of 3.45–5.89, and intrinsic viscosity of 0.62–0.83 dL/g. Incorporation of TMBPA alters the thermal properties of the copolyarylates, decreasing thermal stability ( T 5% ) from 473.4°C to 444.4°C and char yield from 34.6% to 19.7%, but increasing the glass transition temperature ( T g ) from 202.9°C to 234.1°C. TG/FTIR and Py‐GC/MS analysis revealed that methyl groups adjacent to the phenolic hydroxyl group promoted chain breakage and accelerated thermal decomposition. The main gaseous products included H 2 O, CO 2 , CO, CH 4 , and phenolic compounds. Tensile strength, tensile modulus, and elongation at break of copolyarylates ranged from 51.83 to 60.21 MPa, 1023.28 to 1283.14 MPa, and 32.9% to 53.6%, respectively. This study highlighted the solubility‐thermal property balance, providing insights for designing processable high‐performance polyarylates. 10.1002/app.70310 http://onlinelibrary.wiley.com/termsAndConditions#vor |
| title | Elucidating Ortho‐Methyl Positioning Effects on Decomposition Pathways in Soluble Copolyarylates: A Synergistic Optimization of Solubility and Thermal Property Regulation |
| topic | Journal of Applied Polymer Science |
| url | https://onlinelibrary.wiley.com/doi/10.1002/app.70310 |