巻号一覧
84 巻, 1 号
選択された号の論文の8件中1～8を表示しています
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総説特集 散乱測定によるソフトマテリアルの解析
巻頭言
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斎藤 拓2011 年 84 巻 1 号 p. 4
発行日: 2011年
公開日: 2011/06/07
ジャーナル フリーPDF形式でダウンロード (117K)
総説
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斎藤 拓2011 年 84 巻 1 号 p. 5-6
発行日: 2011年
公開日: 2011/06/07
ジャーナル フリーPDF形式でダウンロード (176K) -
竹中 幹人2011 年 84 巻 1 号 p. 7-13
発行日: 2011年
公開日: 2011/06/07
ジャーナル フリーMost of soft materials form hierarchical structures and their rich varieties of mechanical properties originate from the structures and the correlation among hierarchies. Here we discuss how we can analyze the hierarchical structures in soft materials by using the combination of various scattering methods. We describe the features of each scattering method briefly and show the examples of the analyses of soft materials with the combined scattering methods.抄録全体を表示PDF形式でダウンロード (1026K) -
柴山 充弘2011 年 84 巻 1 号 p. 14-20
発行日: 2011年
公開日: 2011/06/07
ジャーナル フリーIt has already passed about 40 years since small-angle neutron scattering (SANS) technique was applied in structural analyses. SANS is now one of common tools in structure investigations of soft materials. In this article, we briefly describe the basis of neutron scattering, SANS instruments, and theories of SANS. Particularly, we focus on cross-link inhomogeneities and propose two methods. One is the visualization-by-swelling method and the other the contrast variation method. Then, we show several topics in structure investigations of elastomers, such as, natural rubbers and isoprene rubbers cross-linked by sulfur and peroxides.抄録全体を表示PDF形式でダウンロード (875K) -
櫻井 伸一2011 年 84 巻 1 号 p. 21-28
発行日: 2011年
公開日: 2011/06/07
ジャーナル フリーDeformation behaviors of thermoplastic elastomers and structural changes upon uniaxial stretching and upon the subsequent release of the stretching load, as revealed by in-situ measurements of X-ray scattering, are reviewed. Exclusively, the following three subjects are focused; (1) changes in packing regularity of glassy spherical microdomains in styrenic block copolymer samples upon uniaxial stretching and upon the subsequent release of the stretching load, (2) changes in nano-structures in styrenic block copolymer samples bearing glassy lamellar nano-structures upon uniaxial stretching and upon the subsequent release of the stretching load (fracture of the glassy nano-structures), and (3) ultra-small-angle X-ray scattering analyses of structural changes in elastomeric segmented polyurethaneureas upon uniaxial stretching (formation of crazes in sub-micron scale).抄録全体を表示PDF形式でダウンロード (1147K) -
池田 裕子2011 年 84 巻 1 号 p. 29-36
発行日: 2011年
公開日: 2011/06/07
ジャーナル フリーCharacteristics of strain-induced crystallization (SIC) are described on sulfur cross-linked and peroxide cross-linked natural rubber (NR) and synthetic isoprene rubber (IR). Simultaneous tensile and wide-angle X-ray diffraction measurements using synchrotron radiation systems were carried out in order to elucidate SIC. The stretched molecular chains acted as initiating species of the crystallization, while surrounding chains contributed to the crystal growth. Stretching ratio at the onset of SIC (αc) decreased with an increase of network-chain density (ν) for peroxide cross-linked NR (P-NR), while it remained constant for sulfur cross-linked NR (S-NR). But, dependence of relative crystallization rates on ν was similar for both P-NR and S-NR. Calculated entropy differences between the undeformed and the deformed states at αc were equal for P-NR regardless of ν, whereas it became smaller with the increase of ν for S-NR. The SIC behavior of P-NR was in agreement with the prediction on homogeneous or uniform networks by Flory. Network in sulfur cross-linked IR (S-IR) was composed of domains of high ν value embedded in the rubbery network matrix, which gave a characteristic feature in its SIC. Mechanical propeties of S-NR and P-NR are also discussed from the viewpoint of their SIC behaviors on the basis of the network structures.抄録全体を表示PDF形式でダウンロード (818K) -
小川 紘樹, 金谷 利治2011 年 84 巻 1 号 p. 37-41
発行日: 2011年
公開日: 2011/06/07
ジャーナル フリーWe have reviewed structure studies of polymer thin films using synchrotron radiation X-ray and neutron reflectivity as well as recently developed grazing incidence small-angle X-ray and neutron scattering, including studies on polymer thin films with embedded ordered nanometer cells, distribution of glass transition temperature Tg in thin polystyrene films, and dewetting process of polymer blend thin films.抄録全体を表示PDF形式でダウンロード (716K)
紹介
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太智 重光2011 年 84 巻 1 号 p. Annc01_38
発行日: 2011年
公開日: 2011/06/07
ジャーナル 認証ありPDF形式でダウンロード (350K)
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