Abstract: By means of the polymer statistical theory, the A_f type free radical homopolymerization reaction is investigated to give the number of chains, chain nodes, the average length for the elastic effective chains and the corresponding quantities for the dangling chains. Furthermore, the modulus of elasticity, the number of effective crosslinking points, the number and weight-fraction of elastic chains are also deduced. These results are important for revealing the mechanical property of the network polymers.

Key words: Free radical homopolymerization, Polymer network, Elastic chain, Dangling chain(Ed.: H,L)