Crystallization of poly(ethylene terephthalate) induced by organic salts: Model compound study of the mechanism of action of the nucleating agent

Nucleation mechanism and crystallization behavior of poly(ethylene terephthalate) containing ionomers

“…[22][23][24][25][26] This reaction induces chain scissions and produces ionic chain ends, which subsequently precipitate from the melting and associate into ionic clusters. Eventually, the clusters initiate heterogeneous nucleation.…”

“…[19][20][21][22][23][24][25][26] Metal salts of organic polymers containing pendant carboxyl groups are also effective for the acceleration of the crystallization rate. [1,18,[27][28][29] In the present paper, the influence of an ionomer, AClyn, on the crystallization of PET is examined and compared with another ionomer, Surlyn.…”

Crystallization Behavior of Poly(ethylene terephthalate) Modified by Ionomers

“…Over the past decades, a great deal of efforts has been devoted to the discovery of nucleating agents or crystallization promoters, to accelerate the crystallization rate of PET, and a number of additives has been reported in the literature. [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15] For a few years, a detailed study of the effects of additives on crystallization behavior of PET was carried out in our laboratory. In our previous papers, [16 -19] the additives were divid into two kinds: one is nucleating agent, which can be used as a heterogeneous nuclei and effectively enhance nucleation rate of polymers in high temperature region; the other is nucleating promoters which are able to improve molecular motion of chains and promote primary nucleation of chains on the surface of nucleating agents and subsequently crystal growth.…”

Comparison between titanium tetrabutoxide and a new commercial titanium dioxide based catalyst used for the synthesis of poly(ethylene terephthalate)

“…It is worth remembering that the half-time of primary crystallization in isothermal experiments correlates with the temperature corresponding to the maximum of the crystallization peaks in nonisothermal experiments 24 (T cc ), being this latter is more easily obtainable. The exothermic crystallization peaks of the samples under investigation are reported in Figure 5 and the corresponding data are reported in Table II.…”