{"title":"Development of gradient structure in miscible PMMA/PVDF blends under temperature gradient","authors":"Tsubasa Iida , Hiroyuki Hasegawa , Masayuki Yamaguchi , Kazuaki Matsumura , Mayo Hayakawa , Naoya Tsugawa","doi":"10.1016/j.polymer.2025.128298","DOIUrl":null,"url":null,"abstract":"<div><div>In the present study, a gradient structure in a blend composition was developed without phase separation under a temperature gradient. A miscible polymer blend composed of polymethylmethacrylate (PMMA) and polyvinylidene difluoride (PVDF) was used. The viscosity of the PVDF was much lower than that of the PMMA in the molten state. After exposure to the temperature gradient, the PVDF content was greatest at the high-temperature side and lowest at the low-temperature side. Because the high-temperature side contained more PVDF, its surface free energy was lower than that on the low-temperature side.</div></div>","PeriodicalId":405,"journal":{"name":"Polymer","volume":"325 ","pages":"Article 128298"},"PeriodicalIF":4.5000,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Polymer","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0032386125002848","RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"POLYMER SCIENCE","Score":null,"Total":0}
引用次数: 0
Abstract
In the present study, a gradient structure in a blend composition was developed without phase separation under a temperature gradient. A miscible polymer blend composed of polymethylmethacrylate (PMMA) and polyvinylidene difluoride (PVDF) was used. The viscosity of the PVDF was much lower than that of the PMMA in the molten state. After exposure to the temperature gradient, the PVDF content was greatest at the high-temperature side and lowest at the low-temperature side. Because the high-temperature side contained more PVDF, its surface free energy was lower than that on the low-temperature side.
期刊介绍：
Polymer is an interdisciplinary journal dedicated to publishing innovative and significant advances in Polymer Physics, Chemistry and Technology. We welcome submissions on polymer hybrids, nanocomposites, characterisation and self-assembly. Polymer also publishes work on the technological application of polymers in energy and optoelectronics.
The main scope is covered but not limited to the following core areas:
Polymer Materials
Nanocomposites and hybrid nanomaterials
Polymer blends, films, fibres, networks and porous materials
Physical Characterization
Characterisation, modelling and simulation* of molecular and materials properties in bulk, solution, and thin films
Polymer Engineering
Advanced multiscale processing methods
Polymer Synthesis, Modification and Self-assembly
Including designer polymer architectures, mechanisms and kinetics, and supramolecular polymerization
Technological Applications
Polymers for energy generation and storage
Polymer membranes for separation technology
Polymers for opto- and microelectronics.
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