{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,3]],"date-time":"2026-09-03T15:01:08Z","timestamp":1788447668744,"version":"build-2803163510"},"reference-count":59,"publisher":"American Chemical Society (ACS)","issue":"7","license":[{"start":{"date-parts":[[2026,5,26]],"date-time":"2026-05-26T00:00:00Z","timestamp":1779753600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/na","name":"National Science Foundation","doi-asserted-by":"publisher","award":["2234694"],"award-info":[{"award-number":["2234694"]}],"id":[{"id":"10.13039\/na","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/na","name":"National Science Foundation","doi-asserted-by":"publisher","award":["DMR-2442097"],"award-info":[{"award-number":["DMR-2442097"]}],"id":[{"id":"10.13039\/na","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/na","name":"National Science Foundation","doi-asserted-by":"publisher","award":["OIA-2316351"],"award-info":[{"award-number":["OIA-2316351"]}],"id":[{"id":"10.13039\/na","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2026,7,27]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>Mixed polyethylene (PE) and polypropylene (PP) generate roughly 250 million tons of plastic waste annually, yet their mechanical recycling still relies on additive- and reactive chemistry-based compatibilization, raising costs and complicating waste streams that can obstruct circularity at scale. Here, we report an additive-free, thermal solvent immersion annealing strategy that compatibilizes PP\/PE blends post-manufacturing. Elevated temperatures partially melt crystalline regions while the solvent selectively swells amorphous domains, broadening PP\/PE interfaces and promoting local chain mixing. Upon solvent removal, chain recrystallization generates entangled intercrystallite loops that bridge PP and PE domains, enabling efficient stress transfer and transforming brittle blends into tough, strain-hardening materials. We demonstrate broad applicability across PP\/PE compositions and molecular identities, supported by experiments and molecular dynamics simulations that directly track loop formation and its role in stress transfer during sample deformation. This work establishes a new compatibilization pathway based on entangled intercrystallite loop formation, enabled by partial melting and recrystallization, and offers a scalable route to mechanical recycling of plastic waste via phase-specific engineering.<\/jats:p>","DOI":"10.1021\/jacsau.6c00677","type":"journal-article","created":{"date-parts":[[2026,5,26]],"date-time":"2026-05-26T17:01:52Z","timestamp":1779814912000},"page":"4176-4186","source":"Crossref","is-referenced-by-count":1,"title":["Additive-Free Compatibilization of Commodity Polypropylene\/Polyethylene\nvia Partial Melting and Recrystallization"],"prefix":"10.1021","volume":"6","author":[{"ORCID":"https:\/\/orcid.org\/0009-0002-5491-4759","authenticated-orcid":true,"given":"Carmen B.","family":"Dunn","sequence":"first","affiliation":[{"name":"University of Southern Mississippi , , , ,","place":["Hattiesburg, Mississippi, United States, 39406"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0746-7397","authenticated-orcid":true,"given":"Yunjia","family":"Zhang","sequence":"additional","affiliation":[{"name":"Dartmouth College , , , ,","place":["Hanover, New Hampshire, United States, 03755"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Peiran","family":"Wei","sequence":"additional","affiliation":[{"name":"Texas A&M University , , , ,","place":["College Station, Texas, United States, 77845"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jung Bin","family":"Ahn","sequence":"additional","affiliation":[{"name":"Texas A&M University , , , ,","place":["College Station, Texas, United States, 77845"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6026-4284","authenticated-orcid":true,"given":"Wenlin","family":"Zhang","sequence":"additional","affiliation":[{"name":"Dartmouth College , , , ,","place":["Hanover, New Hampshire, United States, 03755"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3539-9053","authenticated-orcid":true,"given":"Zhe","family":"Qiang","sequence":"additional","affiliation":[{"name":"University of Southern Mississippi , , , ,","place":["Hattiesburg, Mississippi, United States, 39406"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"316","published-online":{"date-parts":[[2026,5,26]]},"reference":[{"issue":"7","key":"2026073100192717600_cit1","doi-asserted-by":"publisher","DOI":"10.1126\/sciadv.1700782","article-title":"Production, Use, and Fate of All\nPlastics Ever Made","volume":"3","author":"Geyer","year":"2017","journal-title":"Sci. Adv."},{"issue":"9","key":"2026073100192717600_cit2","doi-asserted-by":"publisher","first-page":"4325","DOI":"10.1021\/acsapm.1c00648","article-title":"Why Is\nRecycling of Postconsumer\nPlastics so Challenging?","volume":"3","author":"Vogt","year":"2021","journal-title":"ACS Appl. Polym. Mater."},{"issue":"7903","key":"2026073100192717600_cit3","doi-asserted-by":"publisher","first-page":"803","DOI":"10.1038\/s41586-021-04350-0","article-title":"Critical Advances and Future Opportunities in Upcycling\nCommodity Polymers","volume":"603","author":"Jehanno","year":"2022","journal-title":"Nature"},{"issue":"7","key":"2026073100192717600_cit4","doi-asserted-by":"publisher","first-page":"501","DOI":"10.1038\/s41578-020-0190-4","article-title":"Chemical Recycling\nto Monomer for an Ideal, Circular\nPolymer Economy","volume":"5","author":"Coates","year":"2020","journal-title":"Nat. Rev. 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Chem.\nPhys."},{"issue":"16","key":"2026073100192717600_cit10","doi-asserted-by":"publisher","first-page":"9609","DOI":"10.1021\/acs.chemrev.4c00047","article-title":"Advances in Nonreactive Polymer Compatibilizers for\nCommodity Polyolefin Blends","volume":"124","author":"Lin","year":"2024","journal-title":"Chem. Rev."},{"issue":"2","key":"2026073100192717600_cit11","doi-asserted-by":"publisher","first-page":"310","DOI":"10.1021\/jacsau.1c00500","article-title":"Linear, Graft, and Beyond: Multiblock Copolymers as\nNext-Generation Compatibilizers","volume":"2","author":"Self","year":"2022","journal-title":"JACS Au"},{"issue":"29","key":"2026073100192717600_cit12","doi-asserted-by":"publisher","DOI":"10.1073\/pnas.2508921122","article-title":"Block Copolymer\nMolecular Design\nto Address Practical Limitations to Recycling Polyolefin Blends","volume":"122","author":"Cui","year":"2025","journal-title":"Proc. Natl. Acad. Sci. 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Sci."},{"issue":"1","key":"2026073100192717600_cit31","doi-asserted-by":"publisher","DOI":"10.1038\/s41467-023-41138-4","article-title":"Reassessing Chain Tilt\nin the Lamellar Crystals of Polyethylene","volume":"14","author":"Kanomi","year":"2023","journal-title":"Nat.\nCommun."},{"key":"2026073100192717600_cit32","doi-asserted-by":"publisher","DOI":"10.1201\/9781420018271","volume-title":"Polymer Chemistry","author":"Hiemenz","year":"2007"},{"issue":"23","key":"2026073100192717600_cit33","doi-asserted-by":"publisher","first-page":"12871","DOI":"10.1021\/acs.macromol.5c01767","article-title":"Course-Grained Simulations of Crystallization in Phase-Separated\nPolymer Blends with Block Copolymer Compatibilizers","volume":"58","author":"Zhang","year":"2025","journal-title":"Macromolecules"},{"issue":"2","key":"2026073100192717600_cit34","doi-asserted-by":"publisher","DOI":"10.1103\/bzpn-qpj5","article-title":"Thermodynamic\nOrigin of Multistep Polymer Crystallization","volume":"135","author":"Zhang","year":"2025","journal-title":"Phys. Rev. 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Polym. Sci., Part A-2"},{"issue":"6","key":"2026073100192717600_cit40","doi-asserted-by":"publisher","first-page":"675","DOI":"10.1007\/s00396-022-04975-1","article-title":"Structure\/Property\nRelationship of Semicrystalline Polymers during Tensile Deformation:\nA Molecular Dynamics Approach","volume":"300","author":"Li","year":"2022","journal-title":"Colloid Polym.\nSci."},{"issue":"9","key":"2026073100192717600_cit41","doi-asserted-by":"publisher","first-page":"4081","DOI":"10.1021\/acs.macromol.4c00242","article-title":"Strain Rate\nDependence of Amorphous Phase Instability in Semicrystalline Polymers:\nInsights from the Scale of Lamellar Stacks","volume":"57","author":"Guo","year":"2024","journal-title":"Macromolecules"},{"issue":"21","key":"2026073100192717600_cit42","doi-asserted-by":"publisher","first-page":"9155","DOI":"10.1021\/acs.macromol.0c02076","article-title":"Critical Strains\nDetermine the Tensile Deformation Mechanism in Semicrystalline Polymers","volume":"53","author":"Men","year":"2020","journal-title":"Macromolecules"},{"issue":"5","key":"2026073100192717600_cit43","doi-asserted-by":"publisher","first-page":"3369","DOI":"10.1021\/acsapm.1c01932","article-title":"Improving the Mechanical\nPerformance of LDPE\/PP Blends through Microfibrillation","volume":"4","author":"Rosales","year":"2022","journal-title":"ACS Appl. Polym. Mater."},{"issue":"3","key":"2026073100192717600_cit44","doi-asserted-by":"publisher","first-page":"291","DOI":"10.1002\/pol.1953.120100303","article-title":"Rupture of Rubber.\nI. Characteristic Energy for Tearing","volume":"10","author":"Rivlin","year":"1953","journal-title":"J. Polym.\nSci."},{"issue":"25","key":"2026073100192717600_cit45","doi-asserted-by":"publisher","DOI":"10.1126\/sciadv.adk6165","article-title":"Predicting Compatibilized Polymer\nBlend Toughness","volume":"10","author":"Ivancic","year":"2024","journal-title":"Sci. Adv."},{"issue":"10","key":"2026073100192717600_cit46","doi-asserted-by":"publisher","first-page":"1257","DOI":"10.1016\/j.progpolymsci.2010.07.001","article-title":"Application of the Essential Work\nof Fracture (EWF) Concept for Polymers, Related Blends and Composites:\nA Review","volume":"35","author":"Ba\u0301ra\u0301ny","year":"2010","journal-title":"Prog. Polym. Sci."},{"issue":"2","key":"2026073100192717600_cit47","doi-asserted-by":"publisher","first-page":"105","DOI":"10.1007\/BF00019787","article-title":"On the Essential\nWork of Ductile Fracture in Polymers","volume":"32","author":"Mai","year":"1986","journal-title":"Int. J.\nFract."},{"issue":"5","key":"2026073100192717600_cit48","doi-asserted-by":"publisher","first-page":"672","DOI":"10.1039\/C3SM52272E","article-title":"Multi-Scale\nMulti-Mechanism Design of Tough Hydrogels: Building Dissipation into\nStretchy Networks","volume":"10","author":"Zhao","year":"2014","journal-title":"Soft Matter"},{"issue":"21","key":"2026073100192717600_cit49","doi-asserted-by":"publisher","first-page":"11883","DOI":"10.1021\/acs.macromol.5c02898","article-title":"Compatibilization of\nPolyethylene and Polypropylene via Dynamic Cross-Linking","volume":"58","author":"Zou","year":"2025","journal-title":"Macromolecules"},{"issue":"3","key":"2026073100192717600_cit50","doi-asserted-by":"publisher","first-page":"1945","DOI":"10.1002\/app.30190","article-title":"Comparison\nof Olefin Copolymers as Compatibilizers for Polypropylene and High-density\nPolyethylene","volume":"113","author":"Lin","year":"2009","journal-title":"J. Appl. Polym. Sci."},{"key":"2026073100192717600_cit51","doi-asserted-by":"publisher","DOI":"10.1016\/j.polymer.2022.125511","article-title":"Effect of Compatibilizer Addition on the Surface Nucleation\nof Dispersed Polyethylene Droplets in a Self-Nucleated Polypropylene\nMatrix","volume":"263","author":"Coba-Daza","year":"2022","journal-title":"Polymer"},{"issue":"22","key":"2026073100192717600_cit52","doi-asserted-by":"publisher","first-page":"19052","DOI":"10.1021\/jacs.5c03869","article-title":"One-Step\nRadical-Induced Synthesis of Graft Copolymers for Effective Compatibilization\nof Polyethylene and Polypropylene","volume":"147","author":"Kra\u0308nzlein","year":"2025","journal-title":"J. Am. Chem.\nSoc."},{"issue":"1","key":"2026073100192717600_cit53","doi-asserted-by":"publisher","DOI":"10.1038\/s41467-025-65525-1","article-title":"Segmented Multiblock Polyolefin Compatibilizers from\nNon-Living Metathesis Chain-Shuffling","volume":"16","author":"Banerjee","year":"2025","journal-title":"Nat.\nCommun."},{"issue":"11","key":"2026073100192717600_cit54","doi-asserted-by":"publisher","DOI":"10.1002\/pat.6645","article-title":"Compatibilization of Post-Consumer Recycled Polypropylene\/Polyethylene\nBinary Blends","volume":"35","author":"Tal","year":"2024","journal-title":"Polym. Adv. Technol."},{"issue":"10","key":"2026073100192717600_cit55","doi-asserted-by":"publisher","first-page":"2487","DOI":"10.1002\/pen.25775","article-title":"Enhancing the Mechanical,\nMorphological, and Rheological Behavior of Polyethylene\/Polypropylene\nBlends with Maleic Anhydride-grafted Polyethylene","volume":"61","author":"Graziano","year":"2021","journal-title":"Polym. Eng. Sci."},{"issue":"4","key":"2026073100192717600_cit56","doi-asserted-by":"publisher","first-page":"391","DOI":"10.1177\/0095244312457162","article-title":"Effect\nof EPDM as a Compatibilizer on Mechanical Properties\nand Morphology of PP\/LDPE Blends","volume":"45","author":"Penava","year":"2013","journal-title":"J. Elastomers\nPlast."},{"key":"2026073100192717600_cit57","doi-asserted-by":"publisher","DOI":"10.1177\/1847980417715929","article-title":"Influence of Mechanical Properties\nof Polypropylene\/Low-Density Polyethylene Nanocomposites","volume":"7","author":"Su","year":"2017","journal-title":"Nanomater. Nanotechnol."},{"issue":"15","key":"2026073100192717600_cit58","doi-asserted-by":"publisher","first-page":"6435","DOI":"10.1021\/acs.macromol.2c00709","article-title":"IPP\/PE Multiblock Copolymers\nfor Plastic Blend Recycling Synthesized by Coordinative Chain Transfer\nPolymerization","volume":"55","author":"Wolff","year":"2022","journal-title":"Macromolecules"},{"issue":"5474","key":"2026073100192717600_cit59","doi-asserted-by":"publisher","first-page":"2187","DOI":"10.1126\/science.288.5474.2187","article-title":"High-Strength Welds\nin Metallocene Polypropylene\/Polyethylene Laminates","volume":"288","author":"Chaffin","year":"2000","journal-title":"Science"}],"container-title":["JACS Au"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/pubs.acs.org\/doi\/pdf\/10.1021\/jacsau.6c00677","content-type":"application\/pdf","content-version":"vor","intended-application":"unspecified"},{"URL":"https:\/\/pubs.acs.org\/jaaucr\/article-pdf\/6\/7\/4176\/66281199\/jacsau.6c00677.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"syndication"},{"URL":"https:\/\/pubs.acs.org\/jaaucr\/article-pdf\/6\/7\/4176\/66281199\/jacsau.6c00677.pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,7,31]],"date-time":"2026-07-31T04:19:33Z","timestamp":1785471573000},"score":1,"resource":{"primary":{"URL":"https:\/\/pubs.acs.org\/jaaucr\/article\/6\/7\/4176\/5234043\/Additive-Free-Compatibilization-of-Commodity"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,5,26]]},"references-count":59,"journal-issue":{"issue":"7","published-online":{"date-parts":[[2026,5,26]]},"published-print":{"date-parts":[[2026,7,27]]}},"URL":"https:\/\/doi.org\/10.1021\/jacsau.6c00677","relation":{},"ISSN":["2691-3704"],"issn-type":[{"value":"2691-3704","type":"electronic"}],"subject":[],"published":{"date-parts":[[2026,5,26]]}}}