Preparation and characterization of poly(propylene carbonate)/exfoliated graphite nanocomposite films with improved thermal stability, mechanical properties and barrier properties

2013 ◽  
Vol 62 (9) ◽  
pp. 1386-1394 ◽  
Author(s):  
Yunho Lee ◽  
Dowan Kim ◽  
Jongchul Seo ◽  
Haksoo Han ◽  
Sher Bahadar Khan
Keyword(s):  
Mechanical Properties ◽  
Thermal Stability ◽  
Propylene Carbonate ◽  
Barrier Properties ◽  
Exfoliated Graphite ◽  
Nanocomposite Films ◽  
Poly Propylene

Preparation and Characterization of Poly(propylene carbonate)/Alkali Lignin Composite Sheets by Calendering Process

2011 ◽  
Vol 233-235 ◽  
pp. 1786-1789 ◽  
Author(s):  
Li Sha Pan ◽  
Nai Xu ◽  
Zheng Tian ◽  
Ling Bin Lu ◽  
Su Juan Pang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Thermal Stability ◽  
Propylene Carbonate ◽  
Convenient Method ◽  
Interfacial Interaction ◽  
Alkali Lignin ◽  
Aliphatic Polycarbonate ◽  
Poly Propylene ◽  
Thermal Stability Of

PPC is a new biodegradable aliphatic polycarbonate with poor thermal stability and mechanical properties which is difficult to form sheets or films and so on. Through the addition of alkali lignin, thermal stability and mechanical properties of PPC was improved largely. PPC/ alkali lignin sheets could be prepared. DSC results showed that the thermal stability of PPC was improved by the introduction of alkali lignin. SEM showed good dispersion of alkali lignin particles into PPC matrix that resulted in good miscibility. Improved mechanical properties and thermal stability of PPC/ alkali lignin blends were attributed to stronger interfacial interaction of PPC and alkali lignin. These results indicate that blending PPC with alkali lignin is an efficient and convenient method to improve the properties of PPC.

The Research of Poly Propylene Carbonate /Nano-SiO2 Composites

2014 ◽  
Vol 904 ◽  
pp. 74-77 ◽  
Author(s):  
Qu Li ◽  
Heng Wu ◽  
Si Yuan Xie ◽  
Jiao Sun ◽  
Xing Hai Liu ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Thermal Stability ◽  
Tensile Strength ◽  
Glass Transition ◽  
Transition Temperature ◽  
Propylene Carbonate ◽  
Tensile Tests ◽  
Slight Improvement ◽  
Biodegradable Poly ◽  
Poly Propylene

Biodegradable poly (propylene carbonate) (PPC) composite with a slight improvement in the thermal stability and tensile strength was successfully prepared by incorporating a low content of nano-SiO2. Tensile tests demonstrate the better mechanical properties of the composites prepared in this study. The obtained composites increases sharply from 1.57Mpa to 12.04Mpa by incorporating 5wt% nano-SiO2. Furthermore, the composites show approximately 8°C higher glass transition temperature (Tg) than that of neat PPC.The Tdmax of composite with 5wt% of nano-SiO2 was about 40°C higher than that of neat PPC.

Preparation and characterization of poly(propylene carbonate)/polystyrene composite films by melt-extrusion method

e-Polymers ◽  
2010 ◽  
Vol 10 (1) ◽  
Author(s):  
Liu Huihong ◽  
Pan Lisha ◽  
Lin Qiang ◽  
Xu Nai ◽  
Lu Lingbin ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Thermal Stability ◽  
Propylene Carbonate ◽  
Composite Films ◽  
Extrusion Process ◽  
Melt Extrusion ◽  
Aliphatic Polycarbonate ◽  
Wide Range ◽  
Poly Propylene ◽  
Extrusion Technology

AbstractPoly(propylene carbonate) (PPC) is a new biodegradable aliphatic polycarbonate with poor thermal stability and mechanical properties which shows difficulty in forming film by melt-extrusion technology. Through the addition of polystyrene (PS), the melt-extrusion film processability, thermal stability and mechanical properties of PPC was improved largely. PPC/PS films were prepared in the the melt-extrusion process successfully. DSC data showed that there was some degree of miscibility between PPC and PS. SEM showed good dispersion of PS particles into PPC matrix. Improved mechanical properties and thermal stability of PPC/PS blends were attributed to homogeneous dispersing and stronger interfacial interaction of PS and PPC. These results indicate that blending PPC with PS is an efficient and convenient method to improve the properties of PPC, and the composites can be used as a common packaging material for a wide range of applications.

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