Glass transition of a polystyrene surface as detected via two-dimensional
diffusion of Au atoms during physical vapor deposition
T. Sasaki, Y. Ito, T. Sasai, S. Irie
Polymer 178 121577-(7) Sep.  2019 Refereed
Segmental dynamics of free-standing and supported polymer thin films predicted from a surface-controlled model
T. Sasaki, T. Nakane, A. Sato
Polymer 172 265-271 Apr.  2019 Refereed
Glass transition at the polystyrene/polyethylene glycol interface observed via contact angle measurements
T. Sasaki, K. Hiraki, A. Athirah, K. Matsuta, N. Takeuchi
Polymer Journal 51 481-488 Jan.  2019 Refereed
Rapid crystallization and mesophase formation of poly(L-lactic acid) during precipitation from a solution
M. Syazwan, T. Sasaki
e-Polymers 18(4) 331-337 Feb.  2018 Refereed
Cooperativity of dynamics in supercooled polymeric materials and its temperature dependence predicted from a surface controlled model
A. Sato, T.Sasaki
European Polymer Journal 99 485-494 Jan.  2018 Refereed
Interfacial effects on the spherulitic morphology of isotactic polystyrene thin films on liquid substrates
T. Sasaki, M. Nakagiri and S. Irie
Advances in Materials Science and Engineering 2016 4849798-(8) 2016 Refereed
Correlation between fragility and cooperativity in segmental dynamics of glass-forming para-substituted polystyrenes
T. Sasaki, M. Ichimura, S. Irie
POLYMER JOURNAL 47(10) 687-694 Oct.  2015 Refereed
Preparation and Drug-Release Kinetics of Porous Poly(L-lactic acid)/Rifampicin Blend Particles
T.Sasaki, H. Matsuura, K. Tanaka
ISRN Polymer Science 2014 128154-(6) Feb.  2014 Refereed
Influence of alpha-cyclodextrin and casting rate on the crystallization of poly(L-lactide) from a PLLA solution
A. Saga, T.Sasaki, K.Sakurai
E-POLYMERS 14(2) 151-157 2014 Refereed
Melting of poly(ε-caprolactone) studied by step-heating calorimetry
T.Sasaki
111 717-724 2013 Refereed
Preparation and glass transition of crosslinked poly(vinyl acetate) thin shells on the surface of a calcium carbonate core
T.Sasaki, K. Suzuki, S. Yonezawa, S.Irie, K.Sakurai
43(11) 881-886 Nov.  2011 Refereed
Origin of enhanced cold crystallization rate for freeze-dried poly(L-lactide) from solutions
T.Sasaki, D. Morino, N. Tabata
51(9) 1858-1865 Sep.  2011 Refereed
Glass transition properties of PMMA thin shells deposited on rodlike calcium carbonate particles
T.Sasaki, R.Kuroda, M.Teramoto, S.Yonezawa, H.Tsuji, K.Sakurai, S.Irie
43(5) 464-470 May  2011 Refereed
Chitosan derivatives / calcium carbonate composite capsules prepared by the layer-by-layer deposition method II Stabilization of the shell by crosslinking
T.Sasaki, H. Mizuuchi, K.Sakurai
2011 476752 2011 Refereed
Morphology and release kinetics of protein-loaded porous poly(L-lactic acid) spheres prepared by freeze-drying technique
T.Sasaki, K. Tanaka, D. Morino, K.Sakurai
2011 490567 2011 Refereed
Freeze-drying improves crystallization of porous biodegradable polymers
T.Sasaki, D. Morino, N. Tabata
 2011 Not refereed
Excess reversing heat capacity during quasi-isothermal crystallization in poly(L-lactide) melt
T.Sasaki, H.Sakurai
57 101-110 Mar.  2009 Not refereed
Formation of porous spherulites of poly(L-lactide) grown from solutions
Takashi Sasaki, Ryuya Asakawa, Kensuke Sakurai
Polymer Journal 41(9) 787-791 2009 Refereed
Interactions between Spiropyrans and Room-Temperature Ionic Liquids: Photochromism and Solvatochromis
Yusong Wu, T.Sasaki, K.Kono, T.Seo, K.Sakurai
112 7530-7536 May  2008 Refereed
Chitosan derivatives / calcium carbonate composite capsules prepared by the layer-by-layer deposition method
Takashi Sasaki, Misato Shimizu, Yusong Wu, Kensuke Sakurai
2008 185632 Mar.  2008 Refereed
A novel biomass-ionic liquid platform for the utilization of native chitin
Yusong Wu, T.Sasaki, S.Irie, K.Sakurai
49 2321-2327 Mar.  2008 Refereed
Glass transition and its characteristic length for thin crosslinked polystyrene shells of rodlike capsules
Takashi Sasaki, Manabu Misu, Takayuki Shimada, Mitsuhiro Teramoto
46(19) 2116-2125 2008 Refereed
Fabrication and structural charaterization of the Langmuir-Blodgett films from a new chitosan derivatives containing cinnamate chromophores
Yusong Wu, Kenji Hisada, Shiro Maeda, Takashi Sasaki, Kensuke Sakurai
68 766-772 Apr.  2007 Refereed
Glass transition of crosslinked polystyrene shells formed on the surface of calcium carbonate whisker
T.Sasaki, S.Kawagoe, H.Mitsuya, S.Irie, K.Sakurai
Journal of Polymer Science Part B: Polymer Physics 44(17) 2475-2485 Jul.  2006 Refereed
Layered structures of hydrophobically modified chitosan derivatives
Yusong Wu, T.Seo, T.Sasaki, S.Irie, K.Sakurai
63 493-499 Jun.  2006 Refereed
Effect of crosslink on the characteristic length of glass transition of network polymers
T.Sasaki, T.Uchida, K.Sakurai
Journal of Polymer Science Part B: Polymer Physics 44(14) 1958-1966 Jun.  2006 Refereed
Mechanical properties of fiber reinforced stryrene-butadiene rubbers using surface-modified UHMWPE fibers under EB irradiation
Y. Kondo, K. Miyazaki, Y. Yamaguchi, T.Sasaki, S.Irie, K.Sakurai
42 1008-1014 Apr.  2006 Refereed
Mechanical properties of fiber reinforced styrene-butadiene rubbers using surface-modified UHMWPE fibers under EB irradiation
Y. Kondo, K. Miyazaki, Y. Yamaguchi, T. Sasaki, K. Sakurai
42 1008-1014 Jan.  2006 Refereed
Thermal properties of poly(L-lactide) (PLLA) freeze-dried under different conditions
T.Sasaki, N.Yamauchi, S.Morita, S.Irie, K.Sakurai
27P1G2-033a Jul.  2005 Not refereed
Core/shell and hollow polymeric capsules prepared from calcium carbonate whisker
T.Sasaki, T. Kitagawa, S. Sato, S.Irie, K.Sakurai
37(6) 434-438 Jun.  2005 Refereed
Circular Dichromism Induced by the Helical Conformations of Acylated Chitosan Derivatives Bearing Cinnamate Chromophores
Y.Wu, T.Seo, S.Maeda, T.Sasaki, S.Irie, K.Sakurai
43 1354-1364 May  2005 Refereed
Differential scanning calorimetry study on thermal behaviors of freeze-dried poly(L-lactide) from dilute solutions
T.Sasaki, N.Yamauchi, S.Irie, K.Sakurai
43 115-124 Jan.  2005 Refereed
Conformational properties of naphthoyl chitosan in solutions and film
Yusong Wu, T.Seo, S.Maeda, Yanming Dong, T.Sasaki, S.Irie, K.Sakurai
Ⅶ-47 67 Sep.  2004
Spectroscopic Studies of the Conformational Properties of Naphthoyl Chitosan in Dilute Solutions
Yusong Wu, T.Seo, S.Maeda, Yanming Dong, T.Sasaki, S.Irie, K.Sakurai
42 2747-2758 Aug.  2004 Refereed
Ultrahigh-Molecular-Weight-Polyethylene-Fiber Surface Treatment by Electron-Beam-Irradiation-Induced Graft Polymerization and lt’s-Effect on Adhesion in a Styrene-Butadiene-Rubber Matrix
K. Sakurai, Y. Kondo, 宮﨑 孝司, T. Okamoto, T. Sasaki
42 2595-2603 May  2004 Refereed
Ultrahigh-Molecular-Weight-Polyethylene-Fiber Surface Treatment by Electron-Beam-Irradiation-Induced Graft Polymerization and Its Effect on Adhesion in a Styrene-Butadiene Rubber Matrix
K.Sakurai, Y.Kondo, K.Miyazaki, T.Okamoto, S.Irie, T.Sasaki
42 2595-2603 Apr.  2004 Refereed
Preparation of Benzoylchitosans and Their Chiroptical Properties in Dilute Solutions
Yusong Wu, T.Seo, S.Maeda, T.Sasaki, S.Irie, K.Sakurai
42 4107-4115 Jan.  2004 Refereed
Multiple melting behavior of syndiotactic 1,2-polybutadiene
T.Sasaki, H.Sunago, T.Hoshikawa
43 629-638 2003 Refereed
Glass transition of small polystyrene spheres in aqueous suspensions
T.Sasaki, A.Shimizu, T.H.Mourey, C.T.Thurau, M.D.Ediger
119 8730-8735 2003 Refereed
Photophysics of novel 2,6-disubstituted benzobisthiazoles possessing chromophoric groups
T.Sasaki, T.Inoue, Y.Komori, S.Irie, K.Sakurai, K.Tsubakiyama
5 1381-1385 2003 Refereed
Epitaxial Growth of N, N’-di(2-anthryl)pyromellitimide on Alkali Halides
N.Moriyama, S.Irie, T.Sasaki, K.Sakurai
41 5682-5685 2002 Refereed
Crystal growth and evaporation of a triphenylboroxin thin film
S.Irie, A.Sakamoto, S.Ukeda, Y.Tokunaga, K.Isa, T.Sasaki, K.Sakurai
237-239 2065-2070 2002 Refereed
Crystallization of poly(ethylene oxide) from solutions of different solvents
T.Sasaki, A.Miyazaki, S.Sugiura, K.Okada
34(11) 799-805 2002 Refereed
Primary nucleation rate and radial growth rate of poly(ethylene oxide) spherulite in viscous solutions
T.Sasaki, Y.Yamamoto, T.Takahashi
32 263-268 2000 Refereed
Structure of Freeze-Dried Atactic Polystyrene from Dilute Solutions
T.Sasaki, M.Tanaka, T.Takahashi
39 3753-3757 1998 Refereed
Spherulitic Growth of Poly(ethylene oxide) from Viscous Solution
T.Sasaki, Y.Yamamoto, T.Takahashi
30 868-873 1998 Refereed
Properties of Porous Poly (L‐Lactic Acid) and its Application as a Drug Carrier
SASAKI TAKASHI
Sen'i Gakkaishi 72(4) 215-215 2016 Not refereed
Spiral crack patterns observed for melt-grown spherulites of poly(L-lactic acid) upon quenching.
Matsuda Futoshi;Sobajima Takamasa;Irie Satoshi;Sasaki Takashi
The European physical journal. E, Soft matter 39(4) 41-48 2016 Refereed
:In this paper, we demonstrate the characteristic spiral cracking that appears on the surface of melt-grown poly(L-lactic acid) (PLLA) spherulites with relatively large sizes (greater than 0.4mm in diameter). The crack occurs via thermal shrinkage upon quenching after crystallization. Although concentric cracks on polymer spherulites have been found to occur in quite a few studies, spiral crack patterns have never been reported so far. The present spiral crack was observed for thick spherulites (> 10 μm), whereas the concentric crack pattern was frequently observed for thin spherulites (typically 5 μm). The present PLLA spherulites exhibited a non-banded structure with no apparent structural periodicity at least on the scale of the spiral pitch, and thus no direct correlation between the crack pattern and the spherulitic structure was suggested. The spiral was revealed to be largely Archimedean of which the spiral pitch increases with an increase in the thickness of the spherulite. This may be interpreted in terms of a classical mechanical model for a thin layer with no delamination from the substrate.