Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Joongsuk Oh"'
Publikováno v:
ACS macro letters. 6(7)
Living and dead chains of a polystyrene synthesized by atom transfer radical polymerization were separated and characterized by high performance liquid chromatography (HPLC), size exclusion chromatography (SEC), NMR, and matrix-assisted laser desorpt
Publikováno v:
Polymer. 170:198-203
We present here a systematic investigation on the glass transition temperature (Tg) for a series of highly purified cyclic polystyrene (c-PS) samples with molecular weight (MW) varying from 3300 to 13,400. Compared with their linear counterparts, c-P
Publikováno v:
Polymer. 135:279-284
Cyclic polymers synthesized by ring-closure method from linear precursors contain some of linear contaminates. In this work, the origin of linear contaminates in cyclic polystyrenes ( c -PS) is demonstrated by the coupling of liquid chromatography at
Autor:
Lingfeng Gao, Xiaohong Li, Taihyun Chang, Christopher Y. Li, Dongxue Chen, Joongsuk Oh, Xiaoming Yang, Yingfeng Tu, Xiulin Zhu
Publikováno v:
Polymer. 101:379-387
We report herein the effects of solvent, concentration, and molecular weight of α-alkynyl-ω-azido polystyrenes (l-PS-N3) on the synthesis of monocyclic polystyrenes (c-PS) by intra-chain coupling of l-PS-N3 via Cu-catalyzed azide/alkyne cycloadditi
Publikováno v:
Macromolecules. 49:4369-4372
Publikováno v:
Macromolecules. 49:3672-3680
Nonlinear polystyrenes (PS) with similar molecular weights but with different molecular structures having star-, figure-8-, and cage-shaped architectures were synthesized by combining atom transfer radical polymerization (ATRP) and click chemistry. F
Autor:
Joongsuk Oh, Muhammad Irfan, Shakil Ahmed, Muhammad Imran Malik, Syed Ghulam Musharraf, Muhammad Raza Shah
Publikováno v:
RSC Advances. 6:98117-98127
In this study, linear and star-shaped polycaprolactones with varying numbers of arms are synthesized by ring opening of e-caprolactone. The polymers were characterized in detail to obtain information of by-products in the samples. Size exclusion chro
Publikováno v:
ChemInform. 47
Publikováno v:
Macromolecules; Jun2016, Vol. 49 Issue 11, p4369-4372, 4p
Publikováno v:
Macromolecules; May2016, Vol. 49 Issue 10, p3672-3680, 9p