G. El hajj Sleiman¹, G. Colomines¹, R. Deterre¹, I. Petit1, E. Leroy², S. Belhabib^1,*

Journal of Renewable Materials, Vol.6, No.3, pp. 270-276, 2018, DOI:10.7569/JRM.2017.634179

Abstract Poly(3-hydroxy butyrate)-co-(3-hydroxy valerate) (PHBV) is a biobased and biodegradable polyester. This semicrystalline bioplastic could be a good candidate for the replacement of some commodity plastics derived from oil. However, the control of the conditions of its processing in order to obtain optimal properties of the finished products remains a current research subject. The objective of this work is to better understand the crystallization under injection molding conditions by inline measurements during the process. We focused on the influence of two key processing parameters, namely, mold temperature and packing pressure. The modeling of inline temperature measurements More >

Sudhakar Muniyasamy^1,2, Osei Ofosu^1,2, Maya Jacob John^1,2, Rajesh D. Anandjiwala^1,2*

Journal of Renewable Materials, Vol.4, No.2, pp. 133-145, 2016, DOI:10.7569/JRM.2016.634104

Abstract The present study investigates the mineralization of poly(lactic acid) (PLA) and poly(3-hydroxybutyrate-covalerate) (PHBV), and PLA/PHBV blend in compost and soil burial environments. The mineralization was assayed on the basis of carbon dioxide (CO2) release from the test materials incubated in compost and soil for a period of 200 days. The degradation was followed by means of fragmentation, thermogravimetric (TGA), FTIR spectroscopy and scanning electron microscopy (SEM) analyses. The results showed that PLA, PHBV and blend of PLA/PHBV achieved almost 90% biodegradation under composting conditions, while PHBV, PLA/PHBV blend and PLA respectively achieved only 35%, 32% More >

Estefanía Lidón Sánchez-Safont¹, Jennifer González-Ausejo¹, José Gámez-Pérez¹, José María Lagarón², Luis Cabedo^1*

Journal of Renewable Materials, Vol.4, No.2, pp. 123-132, 2016, DOI:10.7569/JRM.2015.634127

Abstract Novel biodegradable composites based on poly(3-hydroxybutirate-co-3-hydroxyvalerate) (PHBV) and different contents of purifi ed alpha-cellulose fi bers (3, 10, 25 and 45%) were prepared by melt blending and characterized. The composites were characterized by scanning electron microscopy (SEM), wide-angle X-ray scattering (WAXS) experiments, thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), dynamic mechanic analysis (DMA) and Shore D hardness measurements. Disintegrability under composting conditions was studied according to the ISO 20200 standard. Morphological results showed that high dispersion of the fi bers was achieved during mixing. Good adhesion on the fi ber-matrix interface was also detected by More >

Le H. Song^1,2,*, Nguyen T. Xuan^1,*, Nguyen L. Toan^1,3, Vu Q. Binh³, Angelica B. Boldt¹, Peter G. Kremsner¹, Jürgen F. J. Kun¹

European Cytokine Network, Vol.19, No.4, pp. 204-210, 2008, DOI:10.1684/ecn.2008.0137

Abstract Interferon-α (IFNα) is a critical mediator of immunity to hepatitis B virus (HBV) infection. Although IFN has been used in the treatment of viral hepatitis for more than a decade, the role of IFN-α-receptor in HBV infection has not been intensively studied. We have evaluated the impact of two variants of the IFNAR1 gene on the outcome of HBV infection. Four hundred and fifty eight HBV-infected Vietnamese patients, with well-characterised clinical profiles including all forms of hepatic disease, and 160 non-infected, healthy Vietnamese individuals were enrolled in the study. Of these patients, 54 had acute… More >