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Effect of Lignin Content on the Degradation of the Composite Material Prepared from Thermoplastic Starch and Sugarcane Pith

  • Yali Wu
  • Yanna LvEmail author
  • Maocheng DengEmail author
  • Beihai He
Conference paper
Part of the Lecture Notes in Electrical Engineering book series (LNEE, volume 543)

Abstract

To investigate the effect of lignin content on the material prepared from thermoplastic starch and sugarcane pith (TPS/BP), individual alkaline and combined acid and alkaline pretreatments were employed to obtain BP with different contents of lignin for preparation of TPS/BP. Degradation by microbial organisms using shaking flask and observation of morphology by using SEM were investigated. The deepen scratch-like structure on the surface of BP was observed, which is possibly due to the removal of lignin. Lignin content was decreased by 15% after pretreatment at 100 °C using 5% NaOH solution. The biodegradability of the resultant TPS/BP was improved by 61.76% after 10 days’ digestion at 30 °C with a rotatory speed of 150 rpm. The biodegradability of TPS/BP with lower lignin content of 4–5% was significantly enhanced, with complete degradation after 10 days’ digestion in shaking flask.

Keywords

Lignin Thermoplastic starch/sugarcane pith Composite material Microbial degradation 

Notes

Acknowledgements

The work was supported by grants from Guangdong Soft Science Research Projects (No. 2015A020224045), the Ph.D. Program of Research Projects for Scientific Research and Initiation (201601279), State Key Laboratory of Pulp and Paper Engineering (201802), Guangzhou Science and Technology Plan Project of (201607010331), Program for the Excellent Talents in the University of 2014 (RC2016-002), and Funds for Guangdong Higher School Zhujiang Scholar Distinguished Professor of 2016.

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Copyright information

© Springer Nature Singapore Pte Ltd. 2019

Authors and Affiliations

  1. 1.School of Food and BiotechnologyGuangdong Industry Polytechnic, Centre of Guangdong Higher Education for Engineering and Technological Development of Speciality CondimentsGuangzhouChina
  2. 2.School of Light Industry & Chemical EngineeringDalian Polytechnic UniversityDalianChina
  3. 3.State Key Lab of Pulp and Paper EngineeringNational Engineering Research Center of Papermaking & Pollution Control, South China University of TechnologyGuangzhouChina

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