In this paper

in order to study the polymerization kinetics involving POSS

the polymerization reaction of MMA and Methacrylolsobutyl POSS (MA

7iBu

-POSS) was carried out. The conversion curves and the influence curves of the monomer amount on the reaction rate were obtained by weighing method. The results showed that the reaction rate of polymerization reaction increased with the increase of temperature and initiator concentration

and decreased with MMA mass increases. The influence of MA

7iBu

-POSS on the reaction rate firstly increased and then decreased

and there was an inflection point A. In addition

the activation energy of the polymerization reaction

E

a=87.297kJ/mol. The reaction order I(Initiator)=0.617

and n (MA

7iBu

-POSS)=0.217 when

C

N

was bigger than 0.1239mol/L and

n

(MA

7iBu

-POSS)= -0.202 when the concentration of

C

N

was bigger than 0.1239mol/L. Meanwhile

the reactivity ratio

r

1

(MMA)=1.212 and

r

2

(MA

7iBu

-POSS)=0.567. Thus

the self-polymerization rate of MMA was bigger than its copolymerization

and the copolymerization rate of MA

7iBu

-POSS was bigger than its self-polymerization. The distribution of the two polymerized monomers in the polymer was random.