{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,26]],"date-time":"2026-02-26T06:41:32Z","timestamp":1772088092969,"version":"3.50.1"},"reference-count":33,"publisher":"MDPI AG","issue":"4","license":[{"start":{"date-parts":[[2026,2,20]],"date-time":"2026-02-20T00:00:00Z","timestamp":1771545600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"crossref","award":["22179149"],"award-info":[{"award-number":["22179149"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"crossref"}]},{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"crossref","award":["51673131"],"award-info":[{"award-number":["51673131"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"crossref"}]},{"name":"Joint Research Fund for Scientific and Technological Development of the Henan Academy of Sciences","award":["235200810027"],"award-info":[{"award-number":["235200810027"]}]},{"name":"Scientific Research Initiation Fund for High-Level Talents of Henan Academy of Sciences","award":["232018002"],"award-info":[{"award-number":["232018002"]}]},{"name":"Collaborative Innovation Center for NQI-Quality Safety of Guangzhou","award":["2023B04J0407"],"award-info":[{"award-number":["2023B04J0407"]}]},{"name":"Guangzhou Academician and Expert Workstation","award":["2024-D012"],"award-info":[{"award-number":["2024-D012"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Polymers"],"abstract":"<jats:p>A novel low-cost poly(propylene carbonate-co-epichlorohydrin) (PPC-ECH) with mechanical properties similar to those of poly (butylene adipate-co-terephthalate) (PBAT) was developed and incorporated into a poly(propylene carbonate-co-phthalate) (PPC-P) matrix. Meanwhile, 4, 4\u2032-diphenylmethane diisocyanate (MDI) was employed as a reactive compatibilizer and mixed with PPC-P and PPC-ECH to create a variety of PPC-P\/PPC-ECH\/MDI blends. The effects of PPC-ECH and MDI content on the mechanical, optical, thermal, morphological, and gas barrier properties of the blends were systematically investigated. Results demonstrated that MDI reacts with both PPC-P and PPC-ECH, forming a chemically bonded interface that significantly improves their compatibility. Notably, when 2 phr of MDI was incorporated, the elongation at break of the PPC-P\/PPC-ECH\/2MDI blend increased dramatically from 71% to 502%, while maintaining good tensile strength (~23 MPa) and light transmittance (~80%). To further enhance the gas barrier performance, a high-oxygen-barrier poly(vinyl alcohol) (PVA)\/tannic acid (TA) complex coating was applied to the surface of the PPC-P\/PPC-ECH\/2MDI film. This coating synergistically leveraged the abundant hydroxyl groups in PVA and TA to form a dense hydrogen-bonded network, reducing oxygen permeability to an ultra-low value of 0.1 cm3\u00b7mm\/(m2\u00b7day). This outstanding performance highlights the strong potential of PPC-P\/PPC-ECH-based films for advanced packaging applications.<\/jats:p>","DOI":"10.3390\/polym18040520","type":"journal-article","created":{"date-parts":[[2026,2,20]],"date-time":"2026-02-20T13:08:23Z","timestamp":1771592903000},"page":"520","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Surface-Treated MDI-Compatibilized PPC-P\/PPC-ECH Film with PVA\/Tannic Acid Complex for High-Gas-Barrier Application"],"prefix":"10.3390","volume":"18","author":[{"given":"Shuangshuang","family":"Yue","sequence":"first","affiliation":[{"name":"School of Chemical Engineering and Technology, Sun Yat-sen University, Guangzhou 510275, China"},{"name":"Key Laboratory of Low-Carbon Chemistry & Energy Conservation of Guangdong Province, State Key Laboratory of Optoelectronic Materials and Technologies, School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China"},{"name":"Key Laboratory of Guangdong Higher Education Institutions of Northeast Guangdong New Functional Materials, School of Chemistry and Environment, Jiaying University, Meizhou 514015, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jiangtao","family":"Deng","sequence":"additional","affiliation":[{"name":"School of Chemical Engineering and Technology, Sun Yat-sen University, Guangzhou 510275, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Guoshan","family":"He","sequence":"additional","affiliation":[{"name":"Guangzhou Quality Testing and Inspection Institute, Collaborative Innovation Center for NQI-Quality Safety of Guangzhou, Technology Innovation Center of Food Related Product Quality and Safety, State Administration for Market Regulation, Guangzhou 510000, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Wanjuan","family":"Wang","sequence":"additional","affiliation":[{"name":"Guangzhou Quality Testing and Inspection Institute, Collaborative Innovation Center for NQI-Quality Safety of Guangzhou, Technology Innovation Center of Food Related Product Quality and Safety, State Administration for Market Regulation, Guangzhou 510000, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6364-8769","authenticated-orcid":false,"given":"Min","family":"Xiao","sequence":"additional","affiliation":[{"name":"Key Laboratory of Low-Carbon Chemistry & Energy Conservation of Guangdong Province, State Key Laboratory of Optoelectronic Materials and Technologies, School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sheng","family":"Huang","sequence":"additional","affiliation":[{"name":"Key Laboratory of Low-Carbon Chemistry & Energy Conservation of Guangdong Province, State Key Laboratory of Optoelectronic Materials and Technologies, School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8828-5025","authenticated-orcid":false,"given":"Shuanjin","family":"Wang","sequence":"additional","affiliation":[{"name":"Key Laboratory of Low-Carbon Chemistry & Energy Conservation of Guangdong Province, State Key Laboratory of Optoelectronic Materials and Technologies, School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1557-0789","authenticated-orcid":false,"given":"Dongmei","family":"Han","sequence":"additional","affiliation":[{"name":"School of Chemical Engineering and Technology, Sun Yat-sen University, Guangzhou 510275, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2997-9841","authenticated-orcid":false,"given":"Yuezhong","family":"Meng","sequence":"additional","affiliation":[{"name":"School of Chemical Engineering and Technology, Sun Yat-sen University, Guangzhou 510275, China"},{"name":"Key Laboratory of Low-Carbon Chemistry & Energy Conservation of Guangdong Province, State Key Laboratory of Optoelectronic Materials and Technologies, School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China"},{"name":"Institute of Chemistry, Henan Academy of Sciences, Zhengzhou 450000, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2026,2,20]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"101558","DOI":"10.1016\/j.jcou.2021.101558","article-title":"Performance tailorable terpolymers synthesized from carbon dioxide, phthalic anhydride and propylene oxide using Lewis acid-base dual catalysts","volume":"49","author":"Liang","year":"2021","journal-title":"J. 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