POLYMERS Vol.72　No.3 March 2023

POLYMERS　Vol.72　No.3

COVER STORY
To Permeate or Not to Permeate, That is The Question

Food packaging and organic electronic devices require as low as possible permeation of water vapor and oxygen. Hydrogen carrier materials with high barrier properties are a key for hydrogen-based new-energy technology. Meanwhile, contact lenses with higher oxygen permeation properties are more comfortable for our eyes. The sweat free waterproof shoes are achieved by the material with high water vapor permeation and low liquid water permeation. Design and development of those industrial materials require not only permeation control but also optimization of mechanical property, durability, and optical properties. In this special issue, we discuss polymer materials focusing on their gas permeation properties.

Editors: MIYAMOTO, ISHIWARI, OTOZAWA, HIGUCHI, and MATSUI

Digest for English Readers

Hot Topics in Polymer Science in SPSJ

Awards for Encouragement of Research in Polymer Science; The Society of Polymer Science, Japan 2021

Commentary

To Pass or Not to Pass, That is The Question

Takeo EBINA

COVER STORY: Highlight Reviews

The Enemy of My Enemy is My Friend? History of Oxygen Permeable Materials Research	Eri ITO	94
Gas Barrier Technologies for Flexible OLEDS	Mitsuhiro KODEN	98
Gas Barrier of Plastic Food Packaging	Kazukiyo NAGAI	102

PolyMANGA

106

COVER STORY: Topics and Products

UV Cut Film from Lignin and Clay Mineral with Controllable Gas Transmittance Nature	Kazuhiro SHIKINAKA	107
Method for Controlling Gas Permeability by Double Packaging	Hideki WATANABE	109

Polymer Science and I: A Personal Account

With All My Gratitude

Masayuki GON

111

Messages: “Work and Life”

Work Efficiency

Tomomi KOSHIYAMA

112

Front-Line Polymer Science

Progress in Ionomers

Yohei MIWA

113

Messages from SPSJ

118

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