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Following MCHMA-R_1MC therapy, the CFPP and SP of B20 decreased to a various degree. At 1:7 ppm dosage, MCHMA-C_14MC caused the largest decrease in the CFPP and SP of B20 by 18 °C and 25 °C at 2000 ppm dosages.
Source link: https://doi.org/10.1007/s11164-022-04715-8
The polymerization reactions were carried out in N, N - N -dimethylformamide at 25 °C using Cu/hexamethylenetetramine and CCl-4/hydrazine as the catalyst system and the initiator system, respectively. By gel permeation chromatography, the number of average molecular weights and molecular weight of copolymers were determined. The copolymerization reaction followed a pseudo first-order kinetic model, according to experimental results. PAM-n PAM-run -PMMA's growth linearly with monomer conversion, although a narrow molecular weight distribution was established. The reactivity ratios of r _1 and r _2 were calculated to be 0. 81 and 3. 21, respectively, according to Fineman–Ross' equation. The number of AM unites in PAM-run-PMMA copolymers increased with the rise in AM/MMA's molar ratios increasing. TGA reported that copolymers with a greater proportion of AM units had a higher thermal stability.
Source link: https://doi.org/10.1007/s13726-022-01050-y
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