A5073371181- Polymer crystallization and properties
- Polymer Nanocomposites and Properties
- biodegradable polymer synthesis and properties
- Block Copolymer Self-Assembly
- Advanced Polymer Synthesis and Characterization
- Surfactants and Colloidal Systems
- Crystallization and Solubility Studies
- Material Dynamics and Properties
- Liquid Crystal Research Advancements
- SAS software applications and methods
- Polymer composites and self-healing
- Rheology and Fluid Dynamics Studies
- Supramolecular Chemistry and Complexes
- Diverse Scientific and Engineering Research
- Advanced NMR Techniques and Applications
- Bacteriophages and microbial interactions
- Dendrimers and Hyperbranched Polymers
- X-ray Diffraction in Crystallography
- Supramolecular Self-Assembly in Materials
- Synthesis and properties of polymers
- Muon and positron interactions and applications
- Polymer Surface Interaction Studies
- Force Microscopy Techniques and Applications
- nanoparticles nucleation surface interactions
- Polymer Science and PVC
Tokyo Institute of Technology
2012-2021
Kanagawa University
2008
Japan Advanced Institute of Science and Technology
1994-2002
Gifu University
2000
North Carolina State University
1997
Japan Heart Foundation
1995
Nagoya University
1985-1994
University of Cincinnati
1986
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCrystallization of block copolymers. 1. Small-angle x-ray scattering study a .epsilon.-caprolactone-butadiene diblock copolymerShuichi Nojima, Kazunori Kato, Satoru Yamamoto, and Tamaichi AshidaCite this: Macromolecules 1992, 25, 8, 2237–2242Publication Date (Print):April 1, 1992Publication History Published online1 May 2002Published inissue 1 April...
The crystallization behavior and crystal orientation of poly(ε-caprolactone) (PCL) homopolymers PCL blocks spatially confined in identical nanocylinders have been investigated using differential scanning calorimetry (DSC) two-dimensional wide-angle X-ray diffraction (WAXD) as a function cylinder diameter D. were prepared microphase separation PCL-block-polystyrene (PCL-b-PS) copolymers with photocleavable o-nitrobenzyl group (ONB) between PS the subsequent cleavage ONB by irradiating UV...
The crystal orientation of poly(ε-caprolactone) (PCL) homopolymers, spatially confined in cylindrical nanodomains surrounded by polystyrene (PS) matrices, has been investigated as a function crystallization temperature Tc (−60 °C ≤ −40 °C) using two-dimensional small-angle X-ray scattering (2D-SAXS) and wide-angle diffraction (2D-WAXD). sample was prepared microphase separation an PCL-block-PS copolymer followed photocleavage at the block junction between PCL PS blocks. results were compared...
ADVERTISEMENT RETURN TO ISSUEPREVCommunication to the...Communication the EditorNEXTCrystallization of Homopolymers Confined in Spherical or Cylindrical NanodomainsShuichi Nojima, Yuya Ohguma, Shingo Namiki, Takashi Ishizone, and Kazuo YamaguchiView Author Information Department Organic Polymeric Materials, Graduate School Science Engineering, Tokyo Institute Technology, H-125, 2-12-1 Ookayama, Meguro-Ku, 152-8552, Japan, Chemistry, Faculty Science, Kanagawa University, Hiratsuka, 259-1293,...
Abstract Macromolecular [2]rotaxanes comprising a polymer axle and crown ether wheel were synthesized to evaluate the effect of component mobility on properties polymer, especially its crystallinity. Living ring‐opening polymerization δ ‐ valerolactone with pseudorotaxane initiator hydroxy group at terminus was followed by end‐capping bulky isocyanate. This yielded macromolecular (M2Rs) possessing polyester axles varying molecular weights. The crystallinity polymers two series M2Rs, either...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMorphology formation by combined effect of crystallization and phase separation in a binary blend poly(iε-caprolactone) polystyrene oligomerShuichi Nojima, Kunihiko Satoh, Tamaichi AshidaCite this: Macromolecules 1991, 24, 4, 942–947Publication Date (Print):February 1, 1991Publication History Published online1 May 2002Published inissue 1 February 1991https://pubs.acs.org/doi/10.1021/ma00004a021https://doi.org/10.1021/ma00004a021research-articleACS...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEffect of molecular weight added polystyrene on the order-disorder transition styrene-butadiene diblock copolymerShuichi Nojima and Ryong Joon RoeCite this: Macromolecules 1987, 20, 8, 1866–1876Publication Date (Print):August 1, 1987Publication History Published online1 May 2002Published inissue 1 August 1987https://pubs.acs.org/doi/10.1021/ma00174a029https://doi.org/10.1021/ma00174a029research-articleACS PublicationsRequest reuse...
The melting behavior of double crystalline poly(ε-caprolactone)-block-polyethylene (PCL-b-PE) copolymers, crystallized at various temperatures Tc below the point both blocks, has been investigated by time-resolved small-angle X-ray scattering with synchrotron radiation (SR−SAXS), conventional wide-angle diffraction (WAXD), and differential scanning calorimetry (DSC). temperature PCL blocks Tm,PCL was ca. 56 °C that PE Tm,PEwas 96 °C, so melted first during heating followed blocks. This...
The crystallization process of a new crystalline−crystalline diblock copolymer with close crystallizable temperatures, poly(β-propiolactone)-block-linear low density polyethylene (PPL-b-PE), has been investigated using differential scanning calorimetry (DSC), synchrotron small-angle X-ray scattering (SR-SAXS), and Fourier transform infrared spectroscopy (FTIR). PPL-b-PE formed strongly segregated microdomain structure in the melt, so that both PPL PE blocks was effectively confined within...
The crystallization behavior of poly(ε-caprolactone) (PCL) chains (i.e., PCL block + homopolymer systems) spatially confined in nanocylinders with different diameters D has been investigated as a function the mole fraction homopolymers fhomo existing chains. inside were prepared using microphase separation PCL-block-polystyrene (PCL-b-PS) diblock copolymers photocleavable o-nitrobenzyl group (ONB) between and PS blocks, subsequently ONB was cleaved by controlled irradiation UV light to get...
Abstract The structure of the thermotropic cubic phases 4′- n -alkoxy-3′-nitrobiphenyl-4-carboxylic acids (ANBC- , where indicates number carbon atoms in alkoxy group) was studied by X-ray diffraction. For homologues with = 15, 16, 17, and 18, phase an Ia 3 d type, whereas 19, 20, 21 exhibited Im m structure; for these seven same type observed both on heating cooling. Further lengthening chain to 22 26, however, gave two types region heating, one symmetry low temperature other high region....
Abstract The phase behaviour of the binary systems 4′- n -tetradecyloxy-3′-nitrobiphenyl-4-carboxylic acid (ANBC-14)- -alkane ( -tetradecane or -hexadecane) was investigated by differential scanning calorimetry, polarizing optical microscopy, and X-ray diffraction. a function temperature T ) effective carbon number system n*), where n* involves atoms both from alkoxy group ANBC-14 added. shows no cubic phase, but addition induced phases when n*≧c. 15. An interesting point is that type Ia 3 d...