Effects ofl-aspartic acid and poly(butylene succinate) on thermal stability and mechanical properties of poly(propylene carbonate)

2015 ◽  
Vol 133 (6) ◽  
pp. n/a-n/a ◽  
Author(s):  
Xueyan Yun ◽  
Jiaxin Wu ◽  
Yu Wang ◽  
Zilong Zhao ◽  
Ye Jin ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Thermal Stability ◽  
Aspartic Acid ◽  
Propylene Carbonate ◽  
Butylene Succinate ◽  
Poly Propylene

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.

Enhanced properties of the poly(propylene carbonate)/poly(butylene succinate) composites with chain extender

2018 ◽  
Vol 32 (8) ◽  
pp. 1068-1077 ◽  
Author(s):  
Jing Sun ◽  
Liangqiang Wei ◽  
Shanshan Luo ◽  
Anrong Huang ◽  
Min Shi
Keyword(s):  
Mechanical Properties ◽  
Thermal Decomposition ◽  
Tensile Strength ◽  
Propylene Carbonate ◽  
Mechanical Analysis ◽  
Chain Extender ◽  
Melt Mixing ◽  
Butylene Succinate ◽  
Enhanced Properties ◽  
Poly Propylene

Poly(propylene carbonate) (PPC) blended with poly(butylene succinate) (PBS) with chain extender (CE) was prepared by melt mixing. Mechanical properties of PPC/PBS composites showed that the addition of CE can increase its tensile strength and unnotched impact strength, and the PPC/PBS composites had higher tensile strength when CE (0.4 wt%) was added into PPC/PBS composites. Thermogravimetric measurements revealed that adding CE to PPC/PBS (70/30 wt%) can improve the thermal decomposition temperatures ( T −5% and T −10%). Dynamic mechanical analysis revealed that the incorporation of CE increased the storage modulus of the PPC/PBS (70/30 wt%) composites.

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.

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.

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