a.Research Unit in Polymer Rheology and Processing, Department of Chemical Engineering, Faculty of Engineering, Thammasat University, Pathum Thani 12120, Thailand
b.National Metal and Materials Technology Center, National Science and Technology Development Agency, Thailand Science Park, Pathum Thani 12120, Thailand
cattalee@engr.tu.ac.th
收稿:2021-07-15,
修回:2021-10-13,
录用:2021-10-14,
网络首发:2022-01-01,
纸质出版:2022-02-01
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Chanthot, P.; Kerddonfag, N.; Pattamaprom, C. The influence of peroxide on bubble stability and rheological properties of biobased poly(lactic acid)/natural rubber blown films. Chinese J. Polym. Sci. 2022, 40, 197–207
Peerapong Chanthot, Noppadon Kerddonfag, Cattaleeya Pattamaprom. The Influence of Peroxide on Bubble Stability and Rheological Properties of Biobased Poly(lactic acid)/Natural Rubber Blown Films[J]. Chinese Journal of Polymer Science, 2022, 40(2): 197-207.
Chanthot, P.; Kerddonfag, N.; Pattamaprom, C. The influence of peroxide on bubble stability and rheological properties of biobased poly(lactic acid)/natural rubber blown films. Chinese J. Polym. Sci. 2022, 40, 197–207 DOI: 10.1007/s10118-022-2653-0.
Peerapong Chanthot, Noppadon Kerddonfag, Cattaleeya Pattamaprom. The Influence of Peroxide on Bubble Stability and Rheological Properties of Biobased Poly(lactic acid)/Natural Rubber Blown Films[J]. Chinese Journal of Polymer Science, 2022, 40(2): 197-207. DOI: 10.1007/s10118-022-2653-0.
This study investigated the effects of natural rubber (NR) and an organic peroxide on the rheological properties
mechanical properties
morphology
and bubble stability during film blowing of poly(lactic acid) (PLA). The NR and peroxide contents were varied from 0 wt% to 25 wt% and 0 wt% to 0.5 wt%
respectively. The results confirmed that the presence of well-dispersed NR could significantly improve the toughness
elongation at break
and processability of PLA films
where the optimal amount of NR was 15 wt%. For the reactive blending with peroxide
a suitable peroxide content for good film toughness and clarity was 0.03 wt%
while the higher content of 0.1 wt% could provide slightly higher processability. These contents are considered much lower than that in the PLA system (without NR)
which required up to 0.5 wt% peroxide. The rheological studies indicated that the melt strength
the storage modulus (
G'
) and complex viscosity (
η
*
) at low frequency could be correlated with good film blowing processability of the PLA/NR films at low gel contents. These parameters failed to correlate in the films having high gel contents as the deformation rate experienced by each test was different leading to the different levels of response to the type and amount of gels.
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