With the collaboration of Iran Polymer Society
Catalysis
Influence of diethyl zinc on ethylene-norbornene copolymerization

Leticia Pereira; Maria Marques

Volume 5, Issue 1 , January 2018, , Pages 71-84

https://doi.org/10.22063/poj.2017.1512

Abstract
  Ethylene-norbornene copolymers were synthesized with a homogeneous catalyst system based on bis(imino) pyridine iron with the addition of diethyl zinc (DEZ) as alkyd transfer agent to promote immortal copolymerization. The addition of DEZ did not influence the catalytic activity in copolymerization with ...  Read More

Catalysis
In situ stabilization of polypropylene by lignin using a Ziegler-Natta catalyst

Maria Marques; Renato Oliveira; Rafael Araujo; Bruno Amantes

Volume 1, Issue 1 , January 2014, , Pages 17-24

https://doi.org/10.22063/poj.2014.889

Abstract
  A fourth-generation Ziegler-Natta catalyst was prepared to synthesize polypropylene (PP), which was stabilized by in situpolymerization employing lignin as antioxidant. The antioxidant properties of lignin were compared with those of the commercial antioxidant Irganox 1010. The presence of lignin in ...  Read More