Poly(L-lactic acid)/deproteinized natural rubber blends with enhanced compatibility

I Putu Mahendra; Phan Trung  Nghia; Nguyen Thi Hong Phuong; Tring Thi Hang; Nur Fazreen Alias; Hanafi Ismail

doi:10.14314/polimery.2021.2.3

Published : 2021-02-17

Vol. 66 No. 2 (2021)

Poly(L-lactic acid)/deproteinized natural rubber blends with enhanced compatibility

I Putu Mahendra https://orcid.org/0000-0002-0805-4498 Phan Trung Nghia https://orcid.org/0000-0002-7005-3904 Nguyen Thi Hong Phuong Tring Thi Hang Nur Fazreen Alias https://orcid.org/0000-0002-0805-4498 Hanafi Ismail https://orcid.org/0000-0003-3474-5265

DOI: https://doi.org/10.14314/polimery.2021.2.3

Abstract

PLLA-g-LMWNR (LMWNR – low molecular weight natural rubber) was used as a compatibilizer (1–3 wt %) of poly(L-lactic acid)/deproteinized natural rubber (PLLA/DPNR) blend (95/5 w/w). The LMWNR was prepared using TiO₂/ZnO (9 : 1 w/w) and H₂O₂ as co-catalyst. The obtained LMWNR was grafted with 0–12 wt % maleic anhydride (LMWNR-g-MA) and then with PLLA (PLLA-g-LMWNR). A significant improvement in the mechanical properties of the PLLA/DPNR blend was found in the blend that contained 3 wt % PLLA-g-LMWNR. Scanning electron microscopy showed a decrease in the pore diameter from 5.44 to 1.56 μm. The thermal analysis of PLLA/DPNR blends showed that the T_g value of PLLA phase shifted from 63.1 to 61.4°C. These results confirmed that PLLA-g-LMWNR can enhance the compatibility of the PLLA/DPNR blend.

Keywords

compatibility ; PLLA ; DPNR ; low molecular weight ; natural rubber ; grafting kompatybilność ; PLLA ; DPNR ; kauczuk naturalny o małym ciężarze cząsteczkowym ; szczepienie

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Mahendra, I. P., Nghia, P. T. ., Phuong, N. T. H., Hang, T. T., Alias, N. F., & Ismail, H. (2021). Poly(L-lactic acid)/deproteinized natural rubber blends with enhanced compatibility. Polimery, 66(2), 105–111. https://doi.org/10.14314/polimery.2021.2.3

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I Putu Mahendra
https://orcid.org/0000-0002-0805-4498

Affiliation
Program Studi Kimia, Jurusan Sains, Institut Teknologi Sumatera, Jalan Terusan Ryacudu, Way Huwi, Jati Agung, Lampung Selatan 35365, Indonesia

Phan Trung Nghia nghia.phantrung@hust.edu.vn
https://orcid.org/0000-0002-7005-3904

Affiliation
Center for Rubber Science and Technology, Hanoi University of Science and Technology, 1 Đại Cồ Việt, Bách Khoa, Hà Nội, Vietnam

Nguyen Thi Hong Phuong

Affiliation
School of Chemical Engineering, University of Science and Technology, 1 Đại Cồ Việt, Bách Khoa, Hà Nội, Vietnam

Tring Thi Hang

Affiliation
School of Chemical Engineering, University of Science and Technology, 1 Đại Cồ Việt, Bách Khoa, Hà Nội, Vietnam

Nur Fazreen Alias
https://orcid.org/0000-0002-0805-4498

Affiliation
School of Materials and Mineral Resources Engineering, Universiti Sains Malaysia, Transkrian, Nibong Tebal, Seberang Perai Selatan, Penang, Malaysia

Hanafi Ismail
https://orcid.org/0000-0003-3474-5265

Affiliation
School of Materials and Mineral Resources Engineering, Universiti Sains Malaysia, Transkrian, Nibong Tebal, Seberang Perai Selatan, Penang, Malaysia