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Shikizai Kyokaishi最新文献

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Suitable Methoxysilane and Its Oligomer for Tensile Strength Improvement in Treated Paper Using Titanium Butoxide as Reaction Accelerator 甲氧基硅烷及其低聚物以丁氧钛为反应促进剂提高纸张抗拉强度
Shikizai Kyokaishi Pub Date : 2010-10-20 DOI: 10.4011/SHIKIZAI.83.411
O. Yagi, Kazumi Suzuki, Tomokuni Onoe, F. Ohishi
{"title":"Suitable Methoxysilane and Its Oligomer for Tensile Strength Improvement in Treated Paper Using Titanium Butoxide as Reaction Accelerator","authors":"O. Yagi, Kazumi Suzuki, Tomokuni Onoe, F. Ohishi","doi":"10.4011/SHIKIZAI.83.411","DOIUrl":"https://doi.org/10.4011/SHIKIZAI.83.411","url":null,"abstract":"For investigating the suitable methoxysilane and its oligomer for improving the tensile strength of treated paper after its hydrolysis and poly-condensation, three methoxysilanes (tetramethoxysilane (TMOS) , methyltrimethoxysilane (MTMS) and dimethyldimethoxysilane) and two oligomers (TMOS and MTMS oligomers) were impregnated into the base paper using titanium butoxide as the reaction accelerator. Among the three methoxysilanes, the highest impregnated weight (7.2 g/m 2 ) was obtained when a TMOS solution was used. The highest tensile strength was obtained when an MTMS solution was treated (4.3 kN/m, 130 % increase compared to the base paper). On the other hand, for the two oligomers, the highest weight was 50 g/m 2 and the highest strength was 6.8 kN/m (200 % increase) when an MTMS oligomer solution was treated. These differences in the improvement of the weight and strength between the monomer solutions and the oligomer ones were due to the monomer's high volatility. The reason why the MTMS oligomer produced the highest strength treated paper is attributed to its molecular characteristics. Because the MTMS has one unhydrolyzable group (methyl group) and three hydrolyzable groups (methoxy groups), it is assumed that the balance between the flexibility resulting from the methyl group and the hardness from the methoxy groups produced the moderate tension in the generated polymer. The MTMS oligomer has the same balance as the MTMS. Among the MTMS oligomers having different degrees (n = 3.1, 4.4, 6.3, 8.7, 12.4 and 26.1 ) , there was only a slight difference in strength. The most suitable methoxysilane compound for improvement of the tensile strength was the MTMS oligomer.","PeriodicalId":21870,"journal":{"name":"Shikizai Kyokaishi","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2010-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75125058","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
Application of Ionic Liquid as Surface Modifier: Switching Behavior of Novel Fluoroalkyl End-capped Vinytrimethoxysilane Oligomer — Tri-n-butyl-[(3-trimethoxysilyl) propyl] phosphonium Chloride Silica Nanocomposites between Superhydrophilicity and Oleophobicity 离子液体作为表面改性剂的应用:新型氟烷基端端乙烯三甲氧基硅烷低聚物-三正丁基-[(3-三甲氧基硅基)丙基]氯化磷二氧化硅纳米复合材料的超亲水性和疏油性切换行为
Shikizai Kyokaishi Pub Date : 2010-01-01 DOI: 10.4011/SHIKIZAI.83.368
H. Sawada, Yoshitaka Okada, Yuki Goto, Takayuki Fukui, T. Shibukawa, S. Kodama, Masashi Sugiya
{"title":"Application of Ionic Liquid as Surface Modifier: Switching Behavior of Novel Fluoroalkyl End-capped Vinytrimethoxysilane Oligomer — Tri-n-butyl-[(3-trimethoxysilyl) propyl] phosphonium Chloride Silica Nanocomposites between Superhydrophilicity and Oleophobicity","authors":"H. Sawada, Yoshitaka Okada, Yuki Goto, Takayuki Fukui, T. Shibukawa, S. Kodama, Masashi Sugiya","doi":"10.4011/SHIKIZAI.83.368","DOIUrl":"https://doi.org/10.4011/SHIKIZAI.83.368","url":null,"abstract":"New fluoroalkyl end-capped vinyltrimethoxysilane oligomer - ionic liquid silica nanocomposites were prepared by sol-gel reaction of the corresponding oligomer in the presence of phosphorus-type ionic liquid: tri-n-butyl- [3- (trimethoxysilyl) propyl] phosphonium chloride under alkaline conditions. These fluorinated nanocomposites were found to apply to the surface modification of glass, and the modified glass surface exhibited a high oleophobicity imparted by fluoroalkyl groups in nanocomposites. Interestingly, this modified glass surface was found to show superhydrophilicity derived from hydrophilic cationic ionic liquid segments through the flip-flop motion between fluoroalkyl groups and the ionic liquid segments in nancomposites when the surface environment is changed from air to water.","PeriodicalId":21870,"journal":{"name":"Shikizai Kyokaishi","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2010-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75152415","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: 1
Organic-Inorganic Hybrid Particles: Synthesis of Hybrid Particles by Emulsion Polymerization 有机-无机杂化颗粒:乳液聚合法合成杂化颗粒
Shikizai Kyokaishi Pub Date : 2010-01-01 DOI: 10.4011/SHIKIZAI.83.171
T. Tamai, Mitsuru Watanabe
{"title":"Organic-Inorganic Hybrid Particles: Synthesis of Hybrid Particles by Emulsion Polymerization","authors":"T. Tamai, Mitsuru Watanabe","doi":"10.4011/SHIKIZAI.83.171","DOIUrl":"https://doi.org/10.4011/SHIKIZAI.83.171","url":null,"abstract":"","PeriodicalId":21870,"journal":{"name":"Shikizai Kyokaishi","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2010-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88696210","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
Preparation of Interference Colors and High Luster Pearlescent Pigments Provided by Thin Film Laminations with Different Refractive Index 不同折射率薄膜层合提供干涉色和高光泽珠光颜料的制备
Shikizai Kyokaishi Pub Date : 2008-11-20 DOI: 10.4011/SHIKIZAI.81.429
F. Suzuki, Yukio Murui, M. Adachi, K. Hashimoto, Y. Toda
{"title":"Preparation of Interference Colors and High Luster Pearlescent Pigments Provided by Thin Film Laminations with Different Refractive Index","authors":"F. Suzuki, Yukio Murui, M. Adachi, K. Hashimoto, Y. Toda","doi":"10.4011/SHIKIZAI.81.429","DOIUrl":"https://doi.org/10.4011/SHIKIZAI.81.429","url":null,"abstract":"板状粒子表面に金属酸化物を微細な粒子として薄膜で被覆すると，干渉現象が起きる。金属酸化物として二酸化チタンおよび酸化鉄をマイカ表面に積層することで有色のパール顔料を調製した。2種の金属酸化物の厚さおよび積層の順序を変えた種々の条件を検討した結果，マイカ表面に酸化鉄・二酸化チタンの順に，下層に吸収特性をもち，高屈折率である酸化鉄層を形成させると，より高彩度の着色パール顔料が得られることがわかった。また，積層の順序によりフリップ・フロップ効果に差があることが観察された。","PeriodicalId":21870,"journal":{"name":"Shikizai Kyokaishi","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2008-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77244484","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: 2
カチオン/アニオン界面活性剤混合系を利用したチタニア/界面活性剤複合粒子の調製とナノ構造制御 利用阳离子/阴离子表面活性剂混合体系的钛离子/表面活性剂复合粒子的制备和纳米结构控制
Shikizai Kyokaishi Pub Date : 2008-09-20 DOI: 10.4011/SHIKIZAI.81.325
H. Sakai, Hiroki Kohno, Hideki Hagiwara, T. Ogura, H. Shibata, K. Sakai, T. Ohkubo, M. Abe
{"title":"カチオン/アニオン界面活性剤混合系を利用したチタニア/界面活性剤複合粒子の調製とナノ構造制御","authors":"H. Sakai, Hiroki Kohno, Hideki Hagiwara, T. Ogura, H. Shibata, K. Sakai, T. Ohkubo, M. Abe","doi":"10.4011/SHIKIZAI.81.325","DOIUrl":"https://doi.org/10.4011/SHIKIZAI.81.325","url":null,"abstract":"Titania/surfactant composite particles with nanoscale ordered structure have been prepared by hydrolysis and condensation reactions of titanium oxysulfate in the presence of molecular assemblies formed at aqueous mixtures of cationic and anionic surfactants as structure-directing agents. When cetyltrimethylammonium bromide (CTAB) and sodium octylsulfate (SOS) were used as cationic and anionic surfactants, respectively, particles with hexagonal type ordered nanostructure were obtained at CTAB-rich compositions and their repetition unit increased with increasing SOS content, while the hexagonal structure changed to lamellar structure at a certain SOS content and the repetition unit decreased above this content. These results showed that precise control of geometry and size of the nanoscale-ordered structure is possible by manipulation of the compositions of cationic CTAB and anionic SOS.","PeriodicalId":21870,"journal":{"name":"Shikizai Kyokaishi","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2008-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87625303","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 Oil-repelling Property of Solidified Perfluoropolyether Prepared by Nonaqueous Emulsification Surfactant 非水乳化表面活性剂制备固化全氟聚醚拒油性能的改善
Shikizai Kyokaishi Pub Date : 2008-06-20 DOI: 10.4011/SHIKIZAI.81.193
K. Yoda, M. Shibata
{"title":"Improvement of Oil-repelling Property of Solidified Perfluoropolyether Prepared by Nonaqueous Emulsification Surfactant","authors":"K. Yoda, M. Shibata","doi":"10.4011/SHIKIZAI.81.193","DOIUrl":"https://doi.org/10.4011/SHIKIZAI.81.193","url":null,"abstract":"パーフルオロポリエーテル (PFPE) は優れた撥油性と耐薬品性を有する液状物質である。われわれは非水乳化を用いて固形化したPFPEについて, その撥油性能について検討を行った。炭化水素系オイル, ワックス, 乳化剤およびPFPEによって構成された乳化固形物を人工皮革に塗布したところ, 生成した液状の塗膜は撥油性をまったく示さなかった。これは, 塗布後もPFPEの液滴が炭化水素系オイル中に安定な状態で存在していることによる。乳化状態を不安定化させてPFPEを塗膜表面に分離させるには, フッ化炭素系のワックス (パーフルオロアルキルエーテルシリコーン, SFW) の使用が効果的であった。乳化段階 (85℃) ではSFWはPFPEと相溶し均一な液相を形成するが, 乳化物が固化した25℃においてはPFPEから相分離したSFWがPFPE液滴を包むように結晶を析出した。このカプセル化したPFPE液滴は人工皮革への塗布時に容易に崩壊して炭化水素系オイルから分離し, その結果高い撥油性を示した。","PeriodicalId":21870,"journal":{"name":"Shikizai Kyokaishi","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2008-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77186297","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: 1
Novel Synthetic Process of Metal Nanoparticles Using Poly(Ethylene Oxide)-Poly(Propylene Oxide) Block Copolymers in Solutions 聚环氧乙烷-聚环氧丙烷嵌段共聚物在溶液中合成金属纳米颗粒的新工艺
Shikizai Kyokaishi Pub Date : 2008-01-01 DOI: 10.4011/SHIKIZAI.81.286
T. Sakai
{"title":"Novel Synthetic Process of Metal Nanoparticles Using Poly(Ethylene Oxide)-Poly(Propylene Oxide) Block Copolymers in Solutions","authors":"T. Sakai","doi":"10.4011/SHIKIZAI.81.286","DOIUrl":"https://doi.org/10.4011/SHIKIZAI.81.286","url":null,"abstract":"市販の汎用ポリマーであるポリエチレンオキシド (PEO)―ポリプロピレンオキシド (PPO) ブロック共重合体を用いた金属ナノ粒子新規合成法について紹介する。PEO-PPOブロック共重合体が, 溶液中で金属イオンを還元する作用が見いだされ, 金属ナノ粒子合成法へと発展した。その結果, 還元剤の使用やエネルギー印加を必要としない簡便かつ穏和な多様性に富んだ金属ナノ粒子合成法を実現した。また, PEO-PPOブロック共重合体の両親媒特性を巧みに利用することにより, 形成する粒子のサイズ・形状・複合化・分散安定性を制御できることが明らかとなった。今後のナノテクノロジー分野の発展の鍵となる環境・エネルギー・コスト面の問題を解決し, 克服する技術になり得るものと期待している。","PeriodicalId":21870,"journal":{"name":"Shikizai Kyokaishi","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2008-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75857779","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
Importance of Physicochemical Characterization of Pharmaceuticals 药物理化性质的重要性
Shikizai Kyokaishi Pub Date : 2008-01-01 DOI: 10.4011/SHIKIZAI.81.48
E. Yonemochi
{"title":"Importance of Physicochemical Characterization of Pharmaceuticals","authors":"E. Yonemochi","doi":"10.4011/SHIKIZAI.81.48","DOIUrl":"https://doi.org/10.4011/SHIKIZAI.81.48","url":null,"abstract":"","PeriodicalId":21870,"journal":{"name":"Shikizai Kyokaishi","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2008-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76488004","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
Evaluation of Surface Properties of Polymeric Materials by Atomic Force Microscopy 高分子材料表面性能的原子力显微镜评价
Shikizai Kyokaishi Pub Date : 2008-01-01 DOI: 10.4011/SHIKIZAI.81.354
K. Nakajima, S. Fujinami, T. Nishi
{"title":"Evaluation of Surface Properties of Polymeric Materials by Atomic Force Microscopy","authors":"K. Nakajima, S. Fujinami, T. Nishi","doi":"10.4011/SHIKIZAI.81.354","DOIUrl":"https://doi.org/10.4011/SHIKIZAI.81.354","url":null,"abstract":"原子間力顕微鏡をナノ触診技術へと昇華させ, 高分子材料表面の物性評価手段として活用するための基礎理論と先行技術であるナノインデンターとの比較を解説した。特に完全弾性体を記述するためのヘルツ接触理論, 凝着の効果を取り入れたJKR理論がどのような形で原子間力顕微鏡による力測定に利用できるかを説明するとともに, 実際の応用事例としてゴムブレンドや塗料材料への適用事例を紹介した。","PeriodicalId":21870,"journal":{"name":"Shikizai Kyokaishi","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2008-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90531512","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
Interaction Forces between BSA Adsorbed Layer on Amino-Thiolated Gold Surfaces 氨基硫化金表面上BSA吸附层间的相互作用力
Shikizai Kyokaishi Pub Date : 2008-01-01 DOI: 10.4011/SHIKIZAI.81.2
D. Hiraiwa, K. Torigoe, Tomokazu Yoshimura, K. Esumi
{"title":"Interaction Forces between BSA Adsorbed Layer on Amino-Thiolated Gold Surfaces","authors":"D. Hiraiwa, K. Torigoe, Tomokazu Yoshimura, K. Esumi","doi":"10.4011/SHIKIZAI.81.2","DOIUrl":"https://doi.org/10.4011/SHIKIZAI.81.2","url":null,"abstract":"Direct measurement of interaction forces between bovine serum albumin (BSA) adsorbed layers on amino-thiolated gold surfaces has been carried out using colloidal probe atomic force microscopy (AFM). The substrate was prepared via self-assembly of 2-aminoethanethiol on gold in aqueous media. In the absence of BSA, an electric double layer interaction was observed, resulting from protonation of the primary amine groups on the gold surface. Similar electric double layer repulsions were seen in the presence of BSA over a whole range of BSA concentration investigated. These repulsive interactions were found to be dependent on the BSA concentration, that is, the magnitude of the repulsion increases with the BSA concentration. This phenomenon is attributed to the difference in the adsorbed amount of BSA on the amino-thiolated gold surface, which was confirmed using a 27 MHz quartz crystal microbalance (QCM).","PeriodicalId":21870,"journal":{"name":"Shikizai Kyokaishi","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2008-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74727341","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
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