論文 - 會澤　純雄

Direct Bonding of Polypropylene to Aluminum Using Molecular Connection and the Interface Nanoscale Properties

Jing Sang, Hidetoshi Hirahara, Sumio Aisawa, Zhixin Kang, Kunio Mori

ACS Appl. Polym. Mater.   1   2450 - 2459   2019年08月  [査読有り]

国際的学術誌  共著・分担

Because of the ever increasing demand for high precision and high reliability adhesions, interest in the investigation and development of direct adhesion and interface bonding between different materials is growing rapidly. We report here a direct adhesion method for polymer/metal bonding via grafting of a triazine molecular layer. Polypropylene (PP) and aluminum (Al) are the bonding polymer and metal, respectively, in our study. The surface and interface characteristics at the nanoscale were studied through nanoscale thermal analysis (nano-TA) and atomic force microscopy + nanoscale infrared spectroscopy (AFM nano-IR) to evaluate the thermal properties and chemical structure of the bonding substances. It was found that the triazine molecular agent reacted with the plasma-treated PP and Al surfaces, leading to a covalent bond on the surfaces. The adhesion interface of PP and Al has revealed that the adhesion strength approached the cohesive failure stress of PP when the adhesion temperature exceeded the surface transition temperature (Tt) of PP (i.e., 127 °C ± 3 °C). The AFM-nanoIR spectra displayed crystal peaks of PP at 1164 cm–1 along the interface. The results revealed the effect of surface nanoscale thermal properties and covalent bonding on the resin adhesion bonding. The findings from this study should be particularly valuable in the precision adhesion applications of industrial resins.

DOI

Application of Solid-State Vibrational Circular Dichroism for Intercalation Compounds of Layered Double Hydroxide and Amino Acids: Conformation of an Intercalated Phenylalanine

Hisako Sato, Kazuyoshi Takimoto, Izuru Kawamura, and Sumio Aisawa

Bulletin of the Chemical Society of Japan   92 ( 10 ) 1779 - 1784   2019年06月  [査読有り]

学術誌  共著・分担

Solid-state vibrational circular dichroism (SD-VCD) spectra were measured on the intercalation compounds of layered double hydroxide (LDH) and d- or l-phenylalanine (d- or l-Phe). A used LDH was composed of Zn(II) and Al(III) at 2:1 molar ratio. For comparison, the SD-VCD spectra were recorded on the enantiopure crystalline samples of Phe. The measured spectra were analyzed with a help of the theoretical simulation calculated by the Gaussian16 program. It was concluded that Phe formed a tetramer in the crystalline state, forming the intermolecular hydrogen bonds between –COO- and –NH3+ groups. In the intercalated states, the neighboring Phe molecules oriented vertically to the layer surface in an anti-parallel fashion, forming their –COO- groups hydrogen bonded individually with the OH groups on the surface of LDH. The results demonstrated the utility of the SD-VCD method for obtaining the detailed conformation of a molecule within an inorganic host.

DOI

Adsorption behaviors of deposition-targeted metallic ions onto thiol-containing silane modified liquid crystal polymer surfaces

Dexin Chen, Zhixin Kang, Hidetoshi Hirahara, Sumio Aisawa, Wei Li

Applied Surface Science   479 ( 15 ) 368 - 374   2019年06月  [査読有り]

国際的学術誌  共著・分担

DOI

ポータブル複合Ｘ線分析による中世前半期の中国産陶磁器の産地推定に関する研究 ―福建・浙江産陶磁器の研究を事例に―

徳留大輔，平原英俊，桑静，田上勇一郎，栗建安，羊澤林，沈岳明，會澤純雄

東洋陶磁   ( 48 ) 75 - 92   2019年03月  [査読有り]

学会誌  共著・分担

REMOVAL OF PERFLUOROSURFACTANTS FROM AQUEOUS SOLUTIONS BY COPRECIPITATION WITH Mg–Al LAYERED DOUBLE HYDROXIDES AND THERMAL DECOMPOSITION OF RESULTING PRECIPITATES

Sumio Aisawa, Takeshi Tokuta, Hidetoshi Hirahara, Eiichi Narita

Clay Science   22 ( 3 ) 61 - 69   2018年11月  [査読有り]

学会誌  共著・分担

DOI

ADSORPTION OF AFLATOXIN B1 ON NATURAL CLAYS IN AQUEOUS SOLUTIONS

Sumio Aisawa, Noriyuki Takahashi, Saki Kikuchi, Hidetoshi Hirahara, Eiichi Narita

Clay Science   22 ( 2 ) 53 - 59   2018年06月  [査読有り]

学会誌  共著・分担

DOI

IMPROVEMENT FOR TRIBOLOGICAL AND HYDROGEN BARRIER PROPERTIES OF POLY OLEFINE BY THE ADDITION OF LECITHIN-MODIFIED CLAY

Hidetaka Nanao, Sumio Aisawa, Hidetoshi Hirahara, Noriyuki Takahashi, Masayuki Shirai

Clay Science   21   55 - 58   2017年10月  [査読有り]

国際的学術誌  共著・分担

溶液浸せき法によるスズ系金属表面への トリアジントリチオールの吸着

平井彰, 桑静, 會澤純雄, 平原英俊

色材協会誌   90 ( 5 ) 161 - 167   2017年08月  [査読有り]

学会誌  共著・分担

スズ（Sn）系金属表面にトリアジントリチオール（1,3,5-Triazine-2,4,6-trithiol：TTCA）を，溶液浸せき法により吸着させる条件について研究した。TTCAが互変異性構造をもつことから溶媒のプロトン供与性に着目した。非プロトン性溶媒であるジメチルフォルムアミド（DMF）やN-メチルピロリドン（NMP）溶液中では吸着されにくいが，プロトン供与性溶媒であるメチルアルコール（MeA）やエチレングリコールモノブチルエーテル（EGMBE）溶液中では容易に表面吸着することを新たに見いだした。Sn表面は還元性プラズマ処理をしても空気中で容易に酸化膜を形成するが，プロトン供与性溶媒中では酸化物の酸素が脱離して金属とチオールとの結合によって表面に吸着し，さらにTTCAがジスルフィド結合によって表面に積層されていくことをXPS分析により明らかにした。塗料用溶剤などで使用されているMeAやEGMBEを使用して，浸せき法により金属表面をTTCAで簡便に機能化することが可能となった。

Hybrid joining of polyamide and hydrogenated acrylonitrile butadiene rubber through heat-resistant functional layer of silane coupling agent

Jing Sang, Riku Sato, Sumio Aisawa, Hidetoshi Hirahara, Kunio Mori

Applied Surface Science   412   121 - 130   2017年03月  [査読有り]

国際的学術誌  共著・分担

Volume 412, 1 August 2017, Pages 121-130

Adhesion of carbon steel and natural rubber by functionalized silane coupling agents

Jing Sang, Sumio Aisawa, Katsuya Miura, Hidetoshi Hirahara, Oravec Jan, Preto Jozef, Melus Pavol

International Journal of Adhesion and Adhesives   72   70 - 74   2016年10月  [査読有り]

国際的学術誌  共著・分担

Long period preservation of marine products using electrostatic field

Takamasa Okumura, Taro Yaegashi, Kazuki Yamada, Takanori Ito, Katsuyuki Takahashi, Sumio Aisawa, Koichi Takaki, Shigeyoshi Yamazaki, and Bunei Syuto

Japanese Journal of Applied Physics   55   2016年06月

国際的学術誌  共著・分担

Japanese Journal of Applied Physics 55, 07LG07 (2016)

Integration of Peroxide-Cured Rubber/Rubber Through Covalent Grafting of a Thiol-Linked Molecular Layer

Jing Sang, Sumio Aisawa, Takahiro Kudo, Hidetoshi Hirahara, and Kunio Mori

Ind. Eng. Chem. Res.   55 ( 24 ) 6792 - 6800   2016年05月  [査読有り]

国際的学術誌  共著・分担

A simple, nonfluid, and direct adhesion method was developed to adhere cured rubber/rubber via grafting of a molecular layer of a triazine-based silane coupling agent without any pretreatment. During peroxide curing, oxide functional groups that can react with silanol groups were automatically fabricated on the surface of acrylonitrile–butadiene rubber (NBR) during primary processing at different curing temperatures. After the molecular layer was grafted onto the cured rubber surface, nonfluid adhesion between the cured NBR surfaces was induced. An NBR/NBR joined body was obtained and exhibited high adhesion strength with cohesive failure. The presented method is rapid, inexpensive, and environmentally friendly and can resolve the persistent problems of spew, extra adhesive, and rugose interface in the "fluid adhesion" of adhesive adhesion and vulcanization bonding processes. In addition, this method does not require secondary processing for inducing the formation of functional groups.

Heat-resistant organic molecular layer as a joint interface for metal reduction on plastics surfaces

Jing Sang, Sumio Aisawa, Hidetoshi Hirahara, Takahiro Kudo, Kunio Mori

Applied Surface Science   368   49 - 55   2016年04月  [査読有り]

国際的学術誌  共著・分担

Self-reduction and size controlled synthesis of silver nanoparticles on carbon nanospheres by grafting triazine-based molecular layer for conductivity improvement

Jing Sang, Sumio Aisawa, Hidetoshi Hirahara, Takahiro Kudo, Kunio Mori

Applied Surface Science   364   110 - 116   2015年12月  [査読有り]

国際的学術誌  共著・分担

Primary process to fabricate functional groups on acrylonitrile-butadiene rubber surface during peroxide curing

Jing Sang, Sumio Aisawa, Hidetoshi Hirahara, Kunio Mori

Chemical Engineering Journal   287   657 - 664   2015年11月  [査読有り]

国際的学術誌  共著・分担

多官能性トリアジン化合物による樹脂上への無電解スプレー銀めっきに関する研究

Yanni LI, Sumio AISAWA, Jing SANG, Kunio MORI, Takahiro KUDO, and Hidetoshi HIRAHARA

Journal of The Japan Society of Colour Material   88 ( 8 ) 257 - 264   2015年09月  [査読有り]

学術誌  共著・分担

メカノケミカル-水熱法によるイットリウムまたはテルビウム含有層状複水酸化物の合成

篠原五月，會澤純雄，平原英俊，成田榮一，佐藤次雄

Journal of the Society of Inorganic Materials，Japan   22   129 - 136   2015年06月  [査読有り]

学術誌  共著・分担

コーンコブ炭化物土壌改良材による農作物へのカドミウムイオンの吸収低減効果

佐々木陽，佐藤光沙子，大井崇人，會澤純雄，平原英俊，成田榮一

木質炭化学会誌   11   23 - 30   2014年10月  [査読有り]

学会誌  共著・分担

Mg-Al系層状複水酸化物へのフルオレセインのインターカレーション挙動に及ぼす合成条件の影響

田中みゆき，會澤純雄，平原英俊，成田榮一，董 強，殷 シュウ，佐藤次雄

J. Soc. Inorg. Mater.   20   359 - 367   2013年11月  [査読有り]

学会誌  共著・分担

塩基性染料と酸性染料による毛髪の染色性比較

高橋政信，尾山達人，小野寺哲也，會澤純雄，平原英俊，成田榮一

色材協会誌   86   155 - 162   2013年06月  [査読有り]

学会誌  共著・分担