Citation: Lin-jie Zhang, De-zhan Ye, Jin-bo Tang, Xiao-qin Hu, Xi Zhang. Interaction of Lignosulfonate Calcium and Polyvinyl Alcohol and the Performance of the Blending Material[J]. Acta Polymerica Sinica, ;2016, (4): 471-476. doi: 10.11777/j.issn1000-3304.2016.15239 shu

Interaction of Lignosulfonate Calcium and Polyvinyl Alcohol and the Performance of the Blending Material

Lin-jie Zhang ^1,2,3 ,
De-zhan Ye ⁴ ,
Jin-bo Tang ^1,2,3 ,
Xiao-qin Hu ^1,2,3 ,
Xi Zhang ^1,2,3,,

1.
1. Polymer Research Institute, Sichuan University, Chengdu 610065
2.
2. State Key Laboratory of Polymer Materials and Engineering, Sichuan University, Chengdu 610065
3.
4.
School of Materials Science and Engineering, Wuhan Textile University, Wuhan 430200

Corresponding author: Xi Zhang, 15196630948@163.com
Received Date: 6 September 2015
Revised Date: 8 October 2015

In order to develop environment-friendly polymer materials based on lignosulfonate calcium(HLS) and polyvinyl alcohol (PVA), the solution casting HLS/PVA films were prepared and the interaction between HLS and PVA and the effect of HLS on the thermal, crystalline and mechanical properties of PVA were carefully studied by differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), scanning electron microscopy (SEM) and tensile testing, respectively.When the HLS content is below 35 wt%, HLS/PVA blends showed good compatibility, HLS could be uniformly distributed in PVA.The melting depression theory was adopted for calculating the interaction parameter of HLS/PVA blends.The Flory-Huggins interaction parameter of HLS/PVA was a negative value (-0.0002).It indicated that strong interaction and good compatility occured in HLS/PVA.HLS could reduce the equilibrium melting point of PVA and improve the thermal stability, thus the PVA thermoplastic processing temperature window could be broadened.As for HLS/PVA blend with 35 wt% HLS, the maximum decomposed temperature (Td) is about 16 K higher than that of pure PVA.HLS could reduce the crystallinity, that means the ordered arrangement of PVA main chains in crystalline region could be disturbed by the incorporation of HLS, owing to the specific interactions between PVA and HLS.HLS could improve the strength of PVA.As for HLS/PVA with 35 wt% content of HLS, HLS/PVA blend's tensile strength can reach 92.88 MPa (about 91.9% higher than that of pure PVA) and its Young's modulus can reach 4988.67 MPa (about 604.7% higher than that of pure PVA), but its elongation at break reduced greatly.
- Polyvinyl alcohol,
- Lignosulfonate calcium,
- Blends,
- Thermal property,
- Compatibility,
- Crystallinity,
- Mechanical properties
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