Characterization of Raw and Alkali Treated Cellulosic Filler Isolated from Putranjiva roxburghii W. Seed Shell Roadside Vegetative Residues

ABSTRACT

A natural cellulosic filler extracted from the seed shells of the Putranjiva roxburghii W. has been investigated for its suitability in reinforcement of fiber reinforced polymers. The physicochemical, morphological, structural, and thermal properties of untreated and alkali-treated Putranjiva roxburghii seed shell filler (PRSSF) particles are investigated for the first time. The particle size and morphology of PRSSF particles have been analyzed using laser particle size analyzer and field emission scanning electron microscopy. Energy-dispersive X-ray spectroscopy was used to validate the elements present on the untreated and treated PRSSF particles. The structural features were investigated using X-ray Diffraction, nuclear magnetic resonance, and Fourier transform infrared spectroscopy analysis, which revealed the reduction of the amorphous contents and noncellulosic components. Thermogravimetric analysis was employed to determine the thermal stability of both untreated and treated PRSSF particles. The results indicated that alkali-treated PRSSF particles have higher thermal degradability and stability than untreated PRSSF particles.

摘要

羊绒是柔软, 奢华和昂贵时尚服装的代名词。识别和可能量化回收羊绒的客观和定量方法对于阻止将优质原始羊绒与廉价回收纤维掺假至关重要. 目前, 用于识别再生纤维和未再生纤维的可用分析方法仅限于主观分析. 这项工作研究了客观可靠的方法, 根据再生纤维和原始纤维的不同染料吸收能力, 量化再生羊绒与原始羊绒的混合量. 纯天然羊绒纤维和再生羊绒纤维用不同量的C.I.染色. 采用紫外-可见光谱法对不同条件下的直接红7和排气染液进行分析, 以量化残留的未吸收染料. 然后, 将该方法应用于不同比例的原始羊绒和再生羊绒的混合物, 相关系数.

KEYWORDS:

• Putranjiva roxburghii
• natural fiber
• alternative renewable filler material
• alkali treatment
• structural characterization
• TGA

Disclosure statement

No potential conflict of interest was reported by the author(s).