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Volume 8, Issue 6 (Suppl) J Bioremediat Biodegrad, an open access journal
ISSN:2155-6199 Biopolymers & Bioplastics 2017
October 19-20, 2017
October 19-20, 2017 San Francisco, USA
7th International Conference and Exhibition on
Biopolymers and Bioplastics
Mechanical and rheological analysis of biodegradable PLA/natural rubber blend with nanoparticles
Jung Hyun Ahn, Joung Sook Hong and Kyung Hyun Ahn
Seoul National University, Republic of Korea
Poly(lactic acid) (PLA), as an aliphatic polyester chemically synthesized from bio-derived monomers, is biocompatible and
biodegradable. Different from other biodegradable polyesters, it is thermally stable which promises a great processability for
industrial applications. However, its brittleness limits its usage. it is usually toughened with more ductile elastomer like polyurethane,
rubber. In this study, natural rubber (NR) was added to toughen PLA and also nanoparticles were mixed in order to improve
mechanical properties. In this case, the blend composition of two polymers was widely changed. As the composition increases, the
polymer blends show interpenetrating structure of two polymers, which is expected to bring a large change in properties compared
to other morphology like droplet/matrix. Since polymers are usually immiscible with low interfacial adhesion, its system is often
unstable. So several factors like nature of polymers (interfacial tension, viscosities, ratio of viscosities), their volume fraction,
processing conditions must be in consideration. With a fixed composition of NR, different types of nanoparticles were introduced
with a small amount of weight fraction to see their rheological and mechanical effect. With a small, PLA/
NR system showed different morphological change under FE-SEM images and this was reflected on rheological and mechanical
properties.
Biography
Jung Hyun Ahn currently on a master’s degree in mircorheology lab in Seoul National University since 2016. He is studying polymer melts and its blend, composite
system with different types of filler. Also he is working on the effect of external field like electric field on polymer nanocomposites.
Jung Hyun Ahn et al., J Bioremediat Biodegrad 2017, 8:6 (Suppl)
DOI: 10.4172/2155-6199-C1-012
Figure 1. FE-SEM images of PLA/NR blend with nanoparticles.