Biodegradable Polylactic Acid Foams Modified by the Blending of Cellulose Acetate Butyrate 


Vol. 60,  No. 5, pp. 338-344, Oct.  2023
10.12772/TSE.2023.60.338


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  Abstract

The expanded polystyrene foams, often termed Styrofoam, are not biodegradable and susceptible to photo-oxidation in the ocean contributing to microplastic marine debris, resulting in a global ban as a single use plastic. As an eco-friendly polymer foam, Poly(lactic acid) and PLA/cellulose acetate butyrate (CAB) blends were foamed using an twin-screw extruder with azodicarbonamide (ADCA) as a chemical blowing agent. When cellulose acetate butyrate (CAB) was blended to modify the low melt strength of PLA, the PLA/CAB blend showed outstanding miscibility indicated by the loss of each melting peaks suggesting the amorphous nature of the blends. The foam density of PLA blend decreased from 1.20 g/cm3 to 0.63 g/cm3 with increasing CAB concentration at the adjusted ADCA concentration and extrusion temperature. The CAB blending ratio of 50:50 with 2% ADCA may enhance the foaming capability of PLA through the stabilization of the foam cell structures both by increasing melt viscosity and miscibility, as well as by the higher nonpolar surface energy of CAB compared to PLA

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  Cite this article

[IEEE Style]

J. Kim, D. Kim, H. Kim, M. Park, J. Baek, J. Jang, "Biodegradable Polylactic Acid Foams Modified by the Blending of Cellulose Acetate Butyrate," Textile Science and Engineering, vol. 60, no. 5, pp. 338-344, 2023. DOI: 10.12772/TSE.2023.60.338.

[ACM Style]

Jeong-Hwan Kim, Dong-Jin Kim, Hyeji Kim, Minsu Park, Ji-Yun Baek, and Jinho Jang. 2023. Biodegradable Polylactic Acid Foams Modified by the Blending of Cellulose Acetate Butyrate. Textile Science and Engineering, 60, 5, (2023), 338-344. DOI: 10.12772/TSE.2023.60.338.

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pISSN : 1225 - 1089
eISSN : 2288 - 6419

한국연구재단 우수등재학술지 유지 (2022년)