THE USE OF SPECTROSCOPY TO DETERMINE THE PROPERTIES AND EVALUATION OF EXTRUDED TEA LEAFPLASTIC COMPOSITES

This study determined the color change and the physical properties of extruded tea leaf-plastic composite (TPC) after accelerated weathering. The physical properties in TPC were studied using near infrared (NIR) spectroscopy. TPC experienced both change in color and loss of mechanical properties aft...

Full description

Saved in:
Bibliographic Details
Published in:Journal of tropical forest science 2017-10, Vol.29 (4), p.428-437
Main Authors: Chung, CH, Tu, SH, Huang, CY, Yang, TH, Lin, CJ
Format: Article
Language:English
Subjects:
Chlorophyll
Color
Colors
Composite materials
Contact angle
Darkening
Exposure
Extrusion
Forestry
High density polyethylenes
Leaves
Lignin
Manufacturing
Mechanical properties
Modulus of elasticity
Modulus of rupture
Near infrared radiation
Nitrogen
Normalized difference vegetative index
Physical properties
Plastics
Polyethylene
Polymer matrix composites
Polymers
Polyolefins
Remote sensing
Spectral reflectance
Spectroscopy
Surface properties
Tea
Tropical forests
Vegetation
Vegetation index
Weathering
Weathering processes
Wood sciences
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:This study determined the color change and the physical properties of extruded tea leaf-plastic composite (TPC) after accelerated weathering. The physical properties in TPC were studied using near infrared (NIR) spectroscopy. TPC experienced both change in color and loss of mechanical properties after weathering. The surface characteristics of TPCs also changed significantly after weathering. Exposure of TPC surfaces to weathering resulted in darkening of the color. The average board density (D), modulus of elasticity (MOE) and the modulus of rupture (MOR), for TPCs without weathering, were significantly larger than those for TPCs with different degrees of weathering. The majority of D, MOE and MOR changes occurred during the first 500 hours. The normalised difference vegetation index (NDVI) for TPC without weathering was significantly higher than samples with different durations of weathering. However, there was no significant difference between the values for different exposure times. The NDVI was the most important factor in determining D or MOE. Both the NDVI and the normalised difference lignin index (NDLI) values were used to predict D, using multiple linear regression. The results showed that NIR spectroscopy could potentially be used to determine the properties of tea leaf-plastic composites.
ISSN:0128-1283
2521-9847
DOI:10.26525/jtfs2017.29.4.428437