Characterization of Polyisoprene-b-Poly(methyl methacrylate) Diblock Copolymer Micelles in Acetonitrile‖

1999 ◽  
Vol 103 (43) ◽  
pp. 9090-9103 ◽  
Author(s):  
Karin Schillén ◽  
Ahmad Yekta ◽  
Shaoru Ni ◽  
J. P. S. Farinha ◽  
Mitchell A. Winnik
Keyword(s):  
Methyl Methacrylate ◽  
Diblock Copolymer ◽  
Poly Methyl Methacrylate ◽  
Copolymer Micelles

Synthesis of poly(methyl methacrylate)-b-poly(acrylic acid) by DPE method

e-Polymers ◽  
2008 ◽  
Vol 8 (1) ◽  
Author(s):  
Dong Chen ◽  
Ruixue Liu ◽  
Zhifeng Fu ◽  
Yan Shi
Keyword(s):  
Molecular Weight ◽  
Acrylic Acid ◽  
Methyl Methacrylate ◽  
Diblock Copolymer ◽  
Self Assembly ◽  
Gel Permeation Chromatography ◽  
Amphiphilic Diblock Copolymer ◽  
Poly Methyl Methacrylate ◽  
Copolymer Poly ◽  
Poly Acrylic Acid

AbstractAmphiphilic diblock copolymer poly(methyl methacrylate)-b-poly(acrylic acid) (PMMA-b-PAA) was prepared by 1,1-diphenylethene (DPE) method. Firstly, free radical polymerization of methyl methacrylate was carried out with AIBN as initiator in the presence of DPE, giving a DPE-containing PMMA precursor with controlled molecular weight. tert-Butyl acrylate (tBA) was then polymerized in the presence of the PMMA precursor, and PMMA-b-PtBA diblock copolymer with controlled molecular weight was prepared. Finally, amphiphilic diblock copolymer PMMA-b-PAA was obtained by hydrolysis of PMMA-b-PtBA. The formation of PMMA-b-PAA was confirmed by 1H NMR spectrum and gel permeation chromatography. Transmission electron microscopy and dynamic light scattering were used to detect the self-assembly behavior of the amphiphilic diblock polymers in methanol.

Detailed study on the characterization of silver nanocluster in poly(methyl methacrylate)

1997 ◽  
Vol 501 ◽  
Author(s):  
Naohisa Yanagihara ◽  
Kazutaka Uchida ◽  
Muyuki Wakabayashi ◽  
Toru Hara
Keyword(s):  
Heat Treatment ◽  
Methyl Methacrylate ◽  
Treatment Duration ◽  
Bulk Polymerization ◽  
Visible Spectroscopy ◽  
Poly Methyl Methacrylate ◽  
Silver Nanocluster ◽  
Ag Cluster ◽  
Heat Treatment Duration

ABSTRACTSolid sol of silver in poly(methyl methacrylate), Ag/PMMA, was prepared by bulk polymerization of methyl methacrylate solution of silver (I) triflluoroacetate (AgTfa) and followed by postheating. The formation of the metallic Ag nanocluster was characterized by visible spectroscopy, and effects of the concentrations of AIBN and AgTfa and the heat-treatment duration on the formation of Ag cluster were investigated. Furthermore, based on the kinetic study of MMA in the presence of AgTfa, possible mechanism for the reduction and agglomeration of silver is proposed.

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