Several copolymer of N-acryloylpyrrolidone with acrylamide were prepared in dimethylforamide at 70℃ Monomer reactivity ratios of N-acryloylpyrrolidone and acrylamide were calculated by intersection method and the linear least-square method developed by Fineman and Ross.
$r_1$=0.45(acrylamide)
$r_2$=2.47(n-acryloylpyrrolidone)
It was observed that the copolymer of N-acryloylpyrrolidone and acrylamide have been synthesized back bone chairs with few acyllaetam function, randomly distributed. Copolymers of N-acryloylpyrrolidone with acrylamide were used as an initiator of graft copolymerization of pyrrolidone with potassium hydroxide as a catalyst. The highest percent conversion, percent graft and inherent viscosity were determined by the change of concentration. In the case of initiator 5:1(mole ratio of N-acryloylpyrrolidone and acrylamide, respectively) when 3 mole% of potassium hydroxide the maximum conversion and viscosity were 42% and 1.2. As the mole ratio N-acrylcylpyrrolidone was increased the conversion and viscosity were also increased.
The presence of 18-crown-6 ether led to an increase of the molecular weight of the resulting polymer and the initial rate of polymerization was accelerated by the addition of 18-crown-6 ether.
폴리머의 back-bone 에 Nylon-4 를 graft 시키기 위해서 N-acryloylpyrrolidone 을 합성하고 N-acryloylpyrrolidone 과 acrylamide 와의 공중합체를 개시제로 사용하였다.
N-acryloylpyrrolidone 과 acrylamide 의 공중합시 각 monomer 의 reactivity ratio 를 구하였다.
또한 graft 된 Nylon-4 의 percent conversion 과 점도를 구하였고 18-crown-6 ether 의 존재하에 graft 된 Nylon-4 의 분자량과 점도의 증가를 보았다.
