{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,30]],"date-time":"2026-09-30T09:05:11Z","timestamp":1790759111912,"version":"4.1.0"},"reference-count":65,"publisher":"MDPI AG","issue":"19","license":[{"start":{"date-parts":[[2026,9,30]],"date-time":"2026-09-30T00:00:00Z","timestamp":1790726400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100004077","name":"Kocaeli University","doi-asserted-by":"publisher","award":["FBA-2026-5228"],"award-info":[{"award-number":["FBA-2026-5228"]}],"id":[{"id":"10.13039\/501100004077","id-type":"DOI","asserted-by":"publisher"}]},{"award":["FBA-2026-5228"],"award-info":[{"award-number":["FBA-2026-5228"]}],"id":[{"id":"https:\/\/ror.org\/0411seq30","id-type":"ROR","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Polymers"],"abstract":"<jats:p>Composites based on biodegradable polymers are attractive replacements for metallic electromagnetic interference (EMI) shields, but their performance is limited by nanofiller agglomeration. In poly(lactic acid)\/poly(butylene succinate) (PLA\/PBS) composites reinforced with carbon fiber (CF), unmodified ZnO nanoparticles agglomerate above 1 wt %, severely embrittling the material. In this study, ZnO nanoparticles were coated with poly(ethylene glycol) (PEG, 8 kDa) by solution adsorption and incorporated at 0.5\u20132 wt % into PLA\/PBS (80\/20) containing 20 wt % CF. FTIR showed a +14 cm\u22121 shift in the ether C\u2013O\u2013C band (1093 \u2192 1107 cm\u22121), consistent with adsorption of PEG on the ZnO surface. Fracture surfaces showed uniform sub-micron dispersion, in contrast to the dense interfacial clusters formed by unmodified ZnO at the same loading. At 1 wt % PZ, the composites combined 76.3 MPa tensile strength and 2.35% strain with 71 dB X-band shielding effectiveness, more than three times the 20 dB commercial requirement. The highest shielding, 89 dB, was reached at 1.5 wt %, with absorption contributing more than 90% of the total. Unmodified ZnO required about five times this loading to reach comparable shielding.<\/jats:p>","DOI":"10.3390\/polym18192388","type":"journal-article","created":{"date-parts":[[2026,9,30]],"date-time":"2026-09-30T08:17:27Z","timestamp":1790756247000},"page":"2388","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["PEG Surface Modification of ZnO Nanoparticles Improves Ductility and Absorption-Dominant EMI Shielding in PLA\/PBS\/Carbon Fiber Composites"],"prefix":"10.3390","volume":"18","author":[{"given":"Necla","family":"Altin","sequence":"first","affiliation":[{"name":"Department of Chemical Engineering, Faculty of Engineering, Kocaeli University, 41001 Kocaeli, T\u00fcrkiye"}],"role":[{"vocabulary":"crossref","role":"author"},{"role":"conceptualization","vocabulary":"credit"},{"role":"investigation","vocabulary":"credit"},{"role":"methodology","vocabulary":"credit"},{"role":"visualization","vocabulary":"credit"},{"role":"formal-analysis","vocabulary":"credit"},{"role":"writing-original-draft","vocabulary":"credit"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0561-2447","authenticated-orcid":false,"given":"Saeid","family":"Darvishi","sequence":"additional","affiliation":[{"name":"Department of Chemical Engineering, Faculty of Engineering, Kocaeli University, 41001 Kocaeli, T\u00fcrkiye"}],"role":[{"vocabulary":"crossref","role":"author"},{"role":"conceptualization","vocabulary":"credit"},{"role":"methodology","vocabulary":"credit"},{"role":"formal-analysis","vocabulary":"credit"},{"role":"writing-review-editing","vocabulary":"credit"},{"role":"writing-original-draft","vocabulary":"credit"},{"role":"supervision","vocabulary":"credit"},{"role":"funding-acquisition","vocabulary":"credit"},{"role":"visualization","vocabulary":"credit"},{"role":"resources","vocabulary":"credit"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4446-6086","authenticated-orcid":false,"given":"Bedriye","family":"Ucpinar","sequence":"additional","affiliation":[{"name":"Department of Chemical Engineering, Faculty of Engineering, Yeditepe University, 34755 Istanbul, T\u00fcrkiye"}],"role":[{"vocabulary":"crossref","role":"author"},{"role":"formal-analysis","vocabulary":"credit"},{"role":"investigation","vocabulary":"credit"},{"role":"methodology","vocabulary":"credit"},{"role":"writing-original-draft","vocabulary":"credit"}]},{"given":"Alp Oral","family":"Salman","sequence":"additional","affiliation":[{"name":"Department of Electronics and Communication Engineering, Faculty of Engineering, Kocaeli University, 41001 Kocaeli, T\u00fcrkiye"}],"role":[{"vocabulary":"crossref","role":"author"},{"role":"investigation","vocabulary":"credit"},{"role":"writing-review-editing","vocabulary":"credit"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9566-7881","authenticated-orcid":false,"given":"Ayse","family":"Aytac","sequence":"additional","affiliation":[{"name":"Department of Chemical Engineering, Faculty of Engineering, Kocaeli University, 41001 Kocaeli, T\u00fcrkiye"},{"name":"Department of Polymer Science and Technology, Kocaeli University, 41001 Kocaeli, T\u00fcrkiye"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2026,9,30]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"2100032","DOI":"10.1002\/mame.202100032","article-title":"Review on shielding mechanism and structural design of electromagnetic interference shielding composites","volume":"306","author":"Wang","year":"2021","journal-title":"Macromol. 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