Shikizai Kyokaishi最新文献_第2页

Polyaniline Conductive Paints using Polystyrene, Polyester and Polyurethane Resin made from Facile Blending Method 聚苯胺导电涂料采用聚苯乙烯、聚酯和聚氨酯树脂混炼而成

Shikizai Kyokaishi Pub Date : 2008-01-01 DOI: 10.4011/SHIKIZAI.81.198

Masakazu Hosoda, N. Kuramoto

{"title":"Polyaniline Conductive Paints using Polystyrene, Polyester and Polyurethane Resin made from Facile Blending Method","authors":"Masakazu Hosoda, N. Kuramoto","doi":"10.4011/SHIKIZAI.81.198","DOIUrl":"https://doi.org/10.4011/SHIKIZAI.81.198","url":null,"abstract":"Conductive paints of polyaniline (PANT)/dodecyl benzene sulfonic acid (DBSA) composited with polystyrene (PS), polyester (PET) and polyurethane (PU) resin were prepared through a facile blending method. The extraction of PANI/DBSA from the aqueous reaction mixture was done by using a mixture of toluene and methyl ethyl ketone (MEK) (toluene : MEK=1: 1 v/v), Then, the electrical, thermal stability and tensile properties of the prepared conductive PANI/DBSA composite films were evaluated. Almost all of the PANI/DBSA-PS, -PET and -PU composite films were found to possess relatively good conductivity and low surface resistivity for an electrostatic discharge (ESD) even at low PANI/DBSA content. Even when the PANI/DBSA content in the PANI/DBSA-PS and - PET composite was 2.5 wt %, the electrical conductivity and surface resistivity were found to be 3.92 X 10 - 4 Scm -1 , 8.51x10 6 Ωcm -2 and 4.62 X 10 - 2 Scm -1 , 7.22 X 10 4 Ωcm -2 , respectively. Additionally these composite films exhibited good transparency. The highest conductivity (3.28 X 10 -1 Scm -1 ) of the composite films was obtained when the PANI/DBSA content in PANI/DBSA-PS composite was 25 wt%. PANI/DBSA-PS composite film possessed the best thermal stability and the PANI/DBSA-PU composite films showed the lowest thermal stability of all evaluated samples. On the other hand, PANI/DBSA-PET composite films possessed the most elasticity when the PANI/DBSA contents were 10 and 20 wt%. However, PANI/DBSA-PU composite film possessed the most elasticity when the content was 5 wt %. PANI/DBSA-PS composite films possessed the lowest elasticity.","PeriodicalId":21870,"journal":{"name":"Shikizai Kyokaishi","volume":"55 1","pages":"198-206"},"PeriodicalIF":0.0,"publicationDate":"2008-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89371982","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Improvement of the Light Stability of Automotive Water Borne Coatings: a Difficult Task 提高汽车水性涂料的光稳定性是一项艰巨的任务

Shikizai Kyokaishi Pub Date : 2008-01-01 DOI: 10.4011/SHIKIZAI.81.437

Tom Landuydt

{"title":"Improvement of the Light Stability of Automotive Water Borne Coatings: a Difficult Task","authors":"Tom Landuydt","doi":"10.4011/SHIKIZAI.81.437","DOIUrl":"https://doi.org/10.4011/SHIKIZAI.81.437","url":null,"abstract":"One of the most important current challenges for paint manufacturers is the reduction of volatile organic compounds （ VOC ） in their formulations. As a potential compliant technology for VOC reduction, water borne clear coats are predicted to develop strongly over the coming years. It must be stated that any impairment of the light stabilising performance of these water borne clear coats is unacceptable in the automotive industry. Due to the lack of techniques for the effective and homogeneous incorporation of light stabilisers, which are in general hydrophobic substances, into water borne clear coats, new product forms addressing this issue have become mandatory. Progress has been made with the development of water compatible product forms of water insoluble hydrophobic additives by using a Novel Encapsulated Additives Technology （ NEAT ） micro encapsulation techniques. NEAT enables the development of water borne clear coats for automotive application that show the same performance level as current state of the art solvent borne systems. By this novel encapsulation technology, the best UVA’s and HALS are made available for use in aqueous systems. The easy incorporation of the NEAT light stabilizers requires no need for co-solvents. NEAT light stabilizers offer a permanent protection due to a high wash-out resistance and they do not show a negative influence on transparency and gloss.","PeriodicalId":21870,"journal":{"name":"Shikizai Kyokaishi","volume":"14 1","pages":"437-441"},"PeriodicalIF":0.0,"publicationDate":"2008-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82399768","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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A Topic of Conversation at the Western Corridor of the Yellow River 黄河西部走廊的一个话题

Shikizai Kyokaishi Pub Date : 2008-01-01 DOI: 10.4011/SHIKIZAI.81.80

E. Tsuruta

引用次数: 0

Preparation of Novel Gold Nanoparticles Modified with Thiol-Substituted Porphyrin and Their Properties 巯基卟啉修饰金纳米颗粒的制备及其性能研究

Shikizai Kyokaishi Pub Date : 2008-01-01 DOI: 10.4011/SHIKIZAI.81.37

Hidenori Murata, K. Oyaizu, Masayasu Komuro, Ryota Awa, Harue Tsukioka, T. Saotome, M. Yuasa

{"title":"Preparation of Novel Gold Nanoparticles Modified with Thiol-Substituted Porphyrin and Their Properties","authors":"Hidenori Murata, K. Oyaizu, Masayasu Komuro, Ryota Awa, Harue Tsukioka, T. Saotome, M. Yuasa","doi":"10.4011/SHIKIZAI.81.37","DOIUrl":"https://doi.org/10.4011/SHIKIZAI.81.37","url":null,"abstract":"金ナノ粒子は, 生体に対する毒性が低く, 生体親和性を確保しやすい特徴をもっている。金ナノ粒子は単独では不安定なため, 安定性を確保するために生体親和性および癌細胞指向性の高いチオールポルフィリン化合物を設計・合成し, 金ナノ粒子の修飾を試みた。両者を結合させた化合物に電磁波を照射した場合, 発熱することが予測され, 有効な抗癌活性が期待できると考えた。ポルフィリン修飾型金ナノ粒子の粒子径制御では, 水素化ホウ素ナトリウム還元法およびクエン酸還元法を用い, 安定なポルフィリン修飾型金ナノ粒子を構築した。UV-visスペクトルおよび蛍光スペクトルを測定した結果, ポルフィリン修飾型金ナノ粒子の構築を確認した。また, 安定性の確認として, DLS測定を用いた擬似血中滞留試験を行った。誘電率測定により金ナノ粒子の発熱量を算出し, 調製したポルフィリン修飾型金ナノ粒子が温熱療法などにおいて有効な活性が期待できることが示唆された。","PeriodicalId":21870,"journal":{"name":"Shikizai Kyokaishi","volume":"21 1","pages":"37-42"},"PeriodicalIF":0.0,"publicationDate":"2008-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74574631","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Hair Dyeing and Progress in Research 染发及其研究进展

Shikizai Kyokaishi Pub Date : 2008-01-01 DOI: 10.4011/SHIKIZAI.81.388

H. Yasunaga

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Preparation of Inorganic Fine Particles through Wet Processes 湿法制备无机细颗粒

Shikizai Kyokaishi Pub Date : 2008-01-01 DOI: 10.4011/SHIKIZAI.81.17

Mitsunobu Iwasaki, Wonkyu Park

引用次数: 0

Crystallization Technology to Create Nanocrystals 制造纳米晶体的结晶技术

Shikizai Kyokaishi Pub Date : 2008-01-01 DOI: 10.4011/SHIKIZAI.81.161

I. Hirasawa, T. Mikami