文献类型：期刊文献

英文题名：Analysis of the source of abnormal odor components in medium-density fiberboard (MDF)

作者：Xing, Xuefeng[1,2] Kang, Shifei[1] Li, Shanming[1,2] Luo, Minxian[3]

第一作者：Xing, Xuefeng

通信作者：Li, SM[1]

机构：[1]Chinese Acad Forestry, Res Inst Wood Ind, Beijing, Peoples R China;[2]Nanjing Forestry Univ, Co Innovat Ctr Efficient Proc & Utilizat Forest Re, Nanjing, Peoples R China;[3]Zhaoqing Lihe Technol Dev Co Ltd, Zhaoqing, Peoples R China

年份：2024

外文期刊名：WOOD MATERIAL SCIENCE & ENGINEERING

收录：;EI(收录号：20244917489201);Scopus(收录号：2-s2.0-85211098123);WOS:【SCI-EXPANDED(收录号:WOS:001369977900001)】；

基金：The authors gratefully thank the funding support from the National Key R&D Program of China [grant number 2023YFD2201402].

语种：英文

外文关键词：Medium density fiberboard (MDF); volatile organic compounds (VOCs); Aroma characteristics; gas chromatography-mass spectrometry (GC-MS)

摘要：To investigate the cause of the abnormal odor emitted by medium-density fiberboard (MDF) when formaldehyde-free diphenylmethane diisocyanate (MDI) adhesive is used, a comparative study of three types of MDF was conducted: MDF made with masson pine wood and MDI adhesive (PW-MDI), MDF made with masson pine wood and urea-formaldehyde resin (PW-UF), and MDF made with mixed hardwoods and MDI adhesive (HW-MDI). Volatile organic compounds (VOCs) emitted were collected and analyzed using gas chromatography-mass spectrometry (GC-MS), identifying 86 VOCs. Results reveal that the PW-MDI specimen contains a higher concentration of acid substances, comprising 56% of the specimen. These acid mainly octanoic and nonanoic acids, were the primary contributors to its abnormal odor. In contrast, the PW-UF and HW-MDI specimens were predominantly composed of alcohol substances, accounting for 33% and 36% respectively. Gas chromatography-ion mobility spectrometry (GC-IMS) was used to obtain VOC fingerprints. Analysis revealed that acids and aldehydes are the primary contributors to the relative odor activity value (ROAV). These compounds are known for their abnormal odor that impact the indoor air quality. This research successfully identified the source of the abnormal odor and provided technical support for the effective control of low abnormal odor VOC emissions from MDF.