The effect of mixing sequence on synthesis of PP-g-GMA compatibilizer for multilayer packaging (MLP) compounding

Fitri Ayu RADINI; Firda APRIYANI; yogi angga SWASONO; Reza Pahlevi RUDIANTO; Nonni Soraya SAMBUDI; Yose Fachmi BUYS

doi:10.55713/jmmm.v34i2.1789

Authors

Fitri Ayu RADINI Research Centre for Polymer Technology, National Research and Innovation Agency, Gedung 460 Kawasan Sains dan Teknologi (KST) B.J. Habibie Setu, Tangerang Selatan, Banten, 15314, Indonesia
Firda APRIYANI Research Centre for Advanced Chemistry National Research and Innovation Agency, Gedung 460 Kawasan Sains dan Teknologi (KST) B.J. Habibie Setu, Tangerang Selatan, Banten, 15314, Indonesia
yogi angga SWASONO Research Centre for Polymer Technology, National Research and Innovation Agency, Gedung 460 Kawasan Sains dan Teknologi (KST) B.J. Habibie Setu, Tangerang Selatan, Banten, 15314, Indonesia
Reza Pahlevi RUDIANTO Research Centre for Polymer Technology, National Research and Innovation Agency, Gedung 460 Kawasan Sains dan Teknologi (KST) B.J. Habibie Setu, Tangerang Selatan, Banten, 15314, Indonesia
Nonni Soraya SAMBUDI Department of Chemical Engineering, Faculty of Industrial Technology, Universitas Pertamina, Jakarta 12220, Indonesia
Yose Fachmi BUYS Department of Mechanical Engineering, Faculty of Industrial Technology, Universitas Pertamina, Jakarta 12220, Indonesia

DOI:

https://doi.org/10.55713/jmmm.v34i2.1789

Keywords:

multilayer food packaging, PP-g-GMA, GMA grafting degree, Inititator, Compatibilizer

Abstract

Melt recycling Multilayer Packaging (MLP) waste is difficult due to challenging separation procedures. However, blending techniques with compatibilizers can simplify MLP waste melt recycling. PP-g-GMA is a common compatibilizer in polyolefin and PET blends. PP-g-GMA compatibilizer was synthesized by utilizing an internal mixer at 175℃, 50 rpm, and 10 min using styrene as a comonomer. Titration was a method to examine effect of three different sequences of adding the BPO initiator on GMA grafting. Each sequence's PP-g-GMA samples were compounded with MLP waste using a twin-screw extruder and injection molded to make tensile test specimens. FTIR analysis shows that the GMA and Styrene monomers had grafted onto the PP polymer backbone, with the GMA grafting degree by varying mixing sequence. Sequence 3, which introduced initiator, GMA, and styrene simultaneously to PP melt, yielded PP-g-GMA with the most significant GMA grafting degree of 5.11%. Adding PP-g-GMA produced from sequence 3 into the MLP melt enhanced the highest increase in tensile strength and elongation at break of the MLP/PP-g-GMA compound.

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