Hytrogen-Bonded Self-Assembly Acrylate Polymer Networks
|School||Beijing University of Chemical Technology|
|Course||Polymer Chemistry and Physics|
|Keywords||The Room - isopropylcumylperoxycarbonyl isocyanate (TMI) Of t-butyl phenol (ptBP) Butyl acrylate (BA) T-butyl phenol protection between different acrylic base cumyl isocyanate ester (BTMI) Radical Copolymerization Reactivity ratios Sequence distribution Emulsion Polymerization Temperature programmed decomposition Thermal decomposition kinetics Hydrogen bond self-assembly|
The topics to butyl acrylate (BA) and tert-butyl phenol protected between iso-propylene group the cumyl the isocyanate (BTMI) the copolymerized, synthetic tape \situ generation of the reactive isocyanate functional group, while reaction with isocytosine \Research work mainly includes the following aspects: between iso-propylene group cumyl isocyanate (TMI) and the synthesis of t-butyl phenol reaction protected α-methyl styrene-type the monomer (BTMI), and studied with butyl acrylate (BA) polymerization, the effects of monomer ratio, reaction time and other factors copolymerization. Obtaining a the 60 ℃ copolymerizing reactivity ratios rBTMI = 0.13, the RBa = 0.22, and the copolymer of the configuration parameters of σ = 0.33, and calculating the composition distribution of the copolymer, and the length of the sequence distribution. The experiments show that, low reactivity compared BTMI BA. Recessive isocyanate functional group-containing polymer by emulsion polymerization of BA and BTMI polymer chain during the polymerization reaction time, the copolymerization ratio of monomers, the amount of emulsifier on the conversion rate and the polymer molecular size, also studied the latex particle size and its distribution. This thesis is the Fourier transform infrared spectroscopy in the study the dynamic characteristics of the thermal decomposition of t-butyl phenol protection between different acrylic base cumyl the isocyanate (BTMI) and butyl acrylate copolymer, temperature-programmed and isothermal conditions to calculate the thermal decomposition of power The pharmacokinetic parameters. The process of thermal decomposition of t-butyl phenol protection between different acrylic base cumyl the isocyanate (BTMI) samples. Draw its thermal decomposition activation energy the Ea = 98.433kJ/mol; reaction order is one. Thermal decomposition preexponential factor γ = 2.987 × 107 s -1. By detecting to the isocyanate (-N = C = O, 2270cm-1) of the absorption peak confirmed, 160 ℃ protective groups of t-butyl phenol LT; WP = 4 GT; pyrolysis, as the temperature rises, The pyrolysis faster. However, the pyrolysis of the isocyanate (-N = C = O) to above 280 ℃ occurrence of self-polymerization. Protection of t-butyl phenol-iso-propylene group cumyl isocyanate (BTMI)] and a copolymer of butyl acrylate (BA) and methyl isobutyl cytosine in a 170 ° C thermostat system dimethylsulfoxide as solvent since assembly. Infrared spectra data and the like that, the deprotected polymer with methyl isocytosine reaction occurs, and the occurrence of the hydrogen-bonded self-assembled. However, the system, there are some other side reactions.