Thermal, Mechanical and Rheological Properties of Biodegradable Poly(propylene carbonate) and Poly(butylene carbonate) Blends

Dan-dan Wu; Wu Li; Yan Zhao; Yun-jiao Deng; Hui-liang Zhang; Hui-xuan Zhang; Li-song Dong

doi:10.1007/s10118-015-1597-z

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Thermal, Mechanical and Rheological Properties of Biodegradable Poly(propylene carbonate) and Poly(butylene carbonate) Blends

PAPER | Updated：2021-06-21

- Thermal, Mechanical and Rheological Properties of Biodegradable Poly(propylene carbonate) and Poly(butylene carbonate) Blends
- Chinese Journal of Polymer Science Vol. 33, Issue 3, Pages: 444-455(2015)
- Affiliations：
  
  a.Changchun University of Technology, Changchun 130012, China
  b.Laboratory of Polymer Ecomaterials, Chinese Academy of Sciences, Changchun Institute of Applied Chemistry, Changchun 130022, China
- Author bio：
  
  **Hui-liang Zhang (张会良), E-mail: hlzhang@ciac.jl.cn
- Funds：
- DOI：10.1007/s10118-015-1597-z
  CLC：
- Received：04 June 2014，
  
  Revised：2014-06-27，
  
  Accepted：29 July 2014，
  
  Published：2015-03
- Accepted：
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Dan-dan Wu, Wu Li, Yan Zhao, et al. Thermal, Mechanical and Rheological Properties of Biodegradable Poly(propylene carbonate) and Poly(butylene carbonate) Blends[J]. Chinese Journal of Polymer Science, 2015, 33(3): 444-455.
DOI：

Dan-dan Wu, Wu Li, Yan Zhao, et al. Thermal, Mechanical and Rheological Properties of Biodegradable Poly(propylene carbonate) and Poly(butylene carbonate) Blends[J]. Chinese Journal of Polymer Science, 2015, 33(3): 444-455. DOI： 10.1007/s10118-015-1597-z.

摘要

Abstract

Poly(propylene carbonate) (PPC) was melt blended in a batch mixer with poly(butylene carbonate) (PBC) in an effort to improve the toughness of the PPC without compromising its biodegradability and biocompatibility. DMA results showed that the PPC/PBC blends were an immiscible two-phase system. With the increase in PBC content

the PPC/PBC blends showed decreased tensile strength

however

the elongation at break was increased to 230% for the 50/50 PPC/PBC blend. From the tensile strength experiments

the Pukanszky model gave credit to the modest interfacial adhesion between PPC and PBC

although PPC/PBC was immscible. The impact strength increased significantly which indicated the toughening effects of the PBC on PPC. SEM examination showed that cavitation and shear yielding were the major toughening mechanisms in the blends subjected the impact tests. TGA measurements showed that the thermal stability of PPC decreased with the incorporation of PBC. Rheological investigation demonstrated that the addition of PBC reduced the value of storage modulus

loss modulus and complex viscosity of the PPC/PBC blends to some extent. Moreover

the addition of PBC was found to increase the processability of PPC in extrusion. The introduction of PBC provided an efficient and novel toughened method to extend the application area of PPC.

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