The 20th International Nondestructive Testing and Evaluation of Wood Symposium was hosted by the USDA Forest Service Forest Products Laboratory in Madison, Wisconsin, USA, on September 12-15, 2017. This Symposium was a forum for those involved in nondestructive testing and evaluation (NDT/NDE) of...

Bamboo-wood composite cross-laminated timber (BCLT) is a new kind of wood structure material. Studies of the mechanical properties of BCLT have the potential to improve its utilization. Compared with the traditional testing method, this paper designs a fast and effective nondestructive testing...

Selective depolymerization of lignin is a key strategy for realizing high-value utilization of this natural renewable aromatic biopolymer. Degradation of lignin by the traditional technologies usually requires costly metal complex catalysts, and encounters poor monomer selectivity at present....

The properties of teak wood, such as natural durability and beautiful color, are closely associated with wood extractives. In order to further understand the performance differences between teak heartwood and sapwood, we analyzed the chemical components of extractives from 12 wood samples using an...

The extraction technology of total polyphenols from Eucommia ulmoides Oliver leaves was optimized by ultrasound-microwave assisted method and their antioxidant activity were investigated. Experiments were conducted to investigate the effects of 6 factors, such as ethanol volume fraction,...

The oxidized cellulose (OC) was prepared through selective oxidation of softwood dissolving pulp cellulose by HNO₃/H₃PO₄/NaNO₂ oxidant. The effects of oxidizing conditions, e.g., oxidizing time, temperature and dosages of NaNO₂ on the yields and carboxyl groups contents of OC were studied. The...

Paper packaging materials are widely used in food packaging. However, it is difficult to extract trace chloropropanol from food packaging paper, so there is a lack of research on the leaching of chloropropanol from paper materials. Therefore, it is of positive significance to explore the leaching...

This study proposed a sustainable method to prepare cellulose I nanocrystals (CNCs I) from microcrystalline cellulose (MCC) in a mildly acidic lithium bromide trihydrate (MALBTH) system, a concentrated (50 wt%) solution of LiBr in water with recyclable formic acid (FA). First, the MCC was treated...

Lignin, as a biodegradable byproduct of industry, has become popular in developing low-cost and high-performance heavy metal adsorbents. Herein, a high-efficiency novel adsorbent for mercury ion, amino-functionalization alkali lignin (AAL) was facile synthesized by one-step approach under very mild ...

Lignin is extensively studied to be used as an energy storage material due to its intrinsic catechin structure. However, the limited content of catechin groups in industrial lignin is not enough to satisfy the demand for highly charged storage devices. Herein, the pseudocapacitance of lignin itself ...