Thermo-Mechanical Performance of Polylactide Composites Reinforced with Alkali-Treated Bamboo Fibers

• DOI: 10.3390/polym10040401
• Publication Date: 2018-04-04T16:42:57Z
• Authors: Fang Wang; Shujue Zhou; Mengqing Yang; Zhiqian Chen; Siyan Ran
• Keywords: Thermogravimetric analysis; Sodium hydroxide; Thermal Stability; Hemicellulose; Polylactic Acid

In this study, polylactide acid (PLA) is filled with bamboo fibers (BFs) to fabricate a biodegradable natural composite for industrial applications. The influence of pre-treatment BFs using 4 wt % sodium hydroxide (NaOH) solution at room temperature 1 h on thermal and mechanical properties resultant composites systematically investigated. Differential scanning calorimetry thermogravimetric analysis demonstrate that the incorporation treated promotes higher glass transition crystallization temperatures relative untreated fiber composites, whereas alkali treatment results in superior stability. Furthermore, fracture surfaces are characterized by electron microscopy. changes morphology reveal possible dissolution hemicellulose lignin alkalization NaOH, indicative an improved interfacial adhesion. An increment tensile strength achieved through reinforcement fibers. However, lower modulus found reinforced chemically modified BFs, which might be due partial conversion cellulose I into II. highlight use could feasible candidate as reinforcements development composites.