432 research outputs found
Probe-SAXS on hydrogels under elongation
No full textWe have investigated the effect of polymer/filler interaction on the displacements of silica nanoparticles in gels by introducing them into poly(N,N-dimethylacrylamide) gel (PDAM-NP gel) and polyacrylamide gel (PAM-NP gel). It is well known that PDAM chains are strongly adsorbed onto silica nanoparticles, while PAM chains are not. We carried out SAXS measurements on these gels under uniaxial elongation. Interestingly, we found that the SAXS scattering profiles of PDAM-NP and PAM-NP gels were totally different. A four-spot pattern was observed in the 2D structure factors of the PDAM-NP gel and was assigned to the movement of the nanoparticles in an affine way. On the other hand, as for the PAM-NP gel, a sharp peak was observed in the much lower q region than the prediction of affine deformation, indicating that the peak corresponds to the correlation peak of the high cross-linking region. These experimental findings may lead to the development of ‘‘probe-SAXS’’, which is a new technology for detecting nano-order inhomogeneity in hydrogels
2D pair distribution function analysis of anisotropic small-angle scattering patterns from elongated nano-composite hydrogels
No full textIon Gel Network Formation in an Ionic Liquid Studied by Time-Resolved Small-Angle Neutron Scattering
No full textNearly Ideal Polymer Network Ion Gel Prepared in pH-Buffering Ionic Liquid
No full textWe report a high-toughness ion gel with a nearly ideal polymer network prepared in an imidazolium-based aprotic ionic liquid (ail.) with a controlled solution pH. We formed the ion gel from tetra-armed poly(ethylene glycol) (TetraPEG), i.e., an A-B-type cross-end coupling reaction of two different TetraPEG prepolymers. To complete this A-B-type reaction, we needed to optimize the reaction rate such that the two TetraPEGs were mixed homogeneously, which strongly depends on the pH or [H+] in the aIL, solution. To control solution pH, we established a "pH-buffering IL" by adding an imidazolium-based protic IL (as a proton source) and its conjugated base to the solvent aIL. We demonstrated that the pH-buffering IL exhibits a successful pH-buffering effect to maintain a constant pH (approximate to 16.2, apparent value) during the gelation reaction. From a kinetic study, we found that the gelation reaction undergoes a simple second-order reaction of the two TetraPEGs in the pH-buffering IL. The gelation rate constant, k(gel), in the present ion gel system was 2 orders of magnitude smaller than that in the corresponding hydrogel system, which is ascribed to the difference in the activation entropy, Delta s(double dagger), of the cross-end coupling reactions. The reaction efficiency at the cross-linking point was experimentally estimated to be 92% by spectroscopic measurements. We thus conclude that a nearly ideal polymer network was formed in the pH-buffering IL system. This is reflected in the excellent mechanical property of the ion gel, even at a low polymer content (=6 wt %)
Experimental Observation of Two Features Unexpected from the Classical Theories of Rubber Elasticity
No full text
sj-docx-1-tah-10.1177_20406207221104584 – Supplemental material for Real-world effectiveness and safety analysis of carfilzomib–lenalidomide–dexamethasone and carfilzomib–dexamethasone in relapsed/refractory multiple myeloma: a multicenter retrospective analysis
No full textSupplemental material, sj-docx-1-tah-10.1177_20406207221104584 for Real-world effectiveness and safety analysis of carfilzomib–lenalidomide–dexamethasone and carfilzomib–dexamethasone in relapsed/refractory multiple myeloma: a multicenter retrospective analysis by Yoshiyuki Onda, Junya Kanda, Hitomi Kaneko, Yuji Shimura, Shin-ichi Fuchida, Aya Nakaya, Tomoki Itou, Ryosuke Yamamura, Hirokazu Tanaka, Hirohiko Shibayama, Yutaka Shimazu, Hitoji Uchiyama, Satoshi Yoshihara, Yoko Adachi, Mitsuhiro Matsuda, Hitoshi Hanamoto, Nobuhiko Uoshima, Satoru Kosugi, Kensuke Ohta, Hideo Yagi, Yuzuru Kanakura, Itaru Matsumura, Masayuki Hino, Shosaku Nomura, Chihiro Shimazaki, Akifumi Takaori-Kondo and Junya Kuroda in Therapeutic Advances in Hematology</p
sj-tif-10-tah-10.1177_20406207221142487 – Supplemental material for Monocyte or white blood cell counts and β2 microglobulin predict the durable efficacy of daratumumab with lenalidomide
No full textSupplemental material, sj-tif-10-tah-10.1177_20406207221142487 for Monocyte or white blood cell counts and β2 microglobulin predict the durable efficacy of daratumumab with lenalidomide by Yutaka Shimazu, Junya Kanda, Hitomi Kaneko, Kazunori Imada, Ryosuke Yamamura, Satoru Kosugi, Yuji Shimura, Tomoki Ito, Shin-ichi Fuchida, Hitoji Uchiyama, Kentaro Fukushima, Satoshi Yoshihara, Hitoshi Hanamoto, Hirokazu Tanaka, Nobuhiko Uoshima, Kensuke Ohta, Hideo Yagi, Hirohiko Shibayama, Yoshiyuki Onda, Yasuhiro Tanaka, Yoko Adachi, Mitsuhiro Matsuda, Masato Iida, Takashi Miyoshi, Toshimitsu Matsui, Ryoichi Takahashi, Teruhito Takakuwa, Masayuki Hino, Naoki Hosen, Shosaku Nomura, Chihiro Shimazaki, Itaru Matsumura, Akifumi Takaori-Kondo and Junya Kuroda in Therapeutic Advances in Hematology</p
sj-tif-6-tah-10.1177_20406207221142487 – Supplemental material for Monocyte or white blood cell counts and β2 microglobulin predict the durable efficacy of daratumumab with lenalidomide
No full textSupplemental material, sj-tif-6-tah-10.1177_20406207221142487 for Monocyte or white blood cell counts and β2 microglobulin predict the durable efficacy of daratumumab with lenalidomide by Yutaka Shimazu, Junya Kanda, Hitomi Kaneko, Kazunori Imada, Ryosuke Yamamura, Satoru Kosugi, Yuji Shimura, Tomoki Ito, Shin-ichi Fuchida, Hitoji Uchiyama, Kentaro Fukushima, Satoshi Yoshihara, Hitoshi Hanamoto, Hirokazu Tanaka, Nobuhiko Uoshima, Kensuke Ohta, Hideo Yagi, Hirohiko Shibayama, Yoshiyuki Onda, Yasuhiro Tanaka, Yoko Adachi, Mitsuhiro Matsuda, Masato Iida, Takashi Miyoshi, Toshimitsu Matsui, Ryoichi Takahashi, Teruhito Takakuwa, Masayuki Hino, Naoki Hosen, Shosaku Nomura, Chihiro Shimazaki, Itaru Matsumura, Akifumi Takaori-Kondo and Junya Kuroda in Therapeutic Advances in Hematology</p
sj-tif-12-tah-10.1177_20406207221142487 – Supplemental material for Monocyte or white blood cell counts and β2 microglobulin predict the durable efficacy of daratumumab with lenalidomide
No full textSupplemental material, sj-tif-12-tah-10.1177_20406207221142487 for Monocyte or white blood cell counts and β2 microglobulin predict the durable efficacy of daratumumab with lenalidomide by Yutaka Shimazu, Junya Kanda, Hitomi Kaneko, Kazunori Imada, Ryosuke Yamamura, Satoru Kosugi, Yuji Shimura, Tomoki Ito, Shin-ichi Fuchida, Hitoji Uchiyama, Kentaro Fukushima, Satoshi Yoshihara, Hitoshi Hanamoto, Hirokazu Tanaka, Nobuhiko Uoshima, Kensuke Ohta, Hideo Yagi, Hirohiko Shibayama, Yoshiyuki Onda, Yasuhiro Tanaka, Yoko Adachi, Mitsuhiro Matsuda, Masato Iida, Takashi Miyoshi, Toshimitsu Matsui, Ryoichi Takahashi, Teruhito Takakuwa, Masayuki Hino, Naoki Hosen, Shosaku Nomura, Chihiro Shimazaki, Itaru Matsumura, Akifumi Takaori-Kondo and Junya Kuroda in Therapeutic Advances in Hematology</p
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