• 文献检索
  • 文档翻译
  • 深度研究
  • 学术资讯
  • Suppr Zotero 插件Zotero 插件
  • 邀请有礼
  • 套餐&价格
  • 历史记录
应用&插件
Suppr Zotero 插件Zotero 插件浏览器插件Mac 客户端Windows 客户端微信小程序
定价
高级版会员购买积分包购买API积分包
服务
文献检索文档翻译深度研究API 文档MCP 服务
关于我们
关于 Suppr公司介绍联系我们用户协议隐私条款
关注我们

Suppr 超能文献

核心技术专利：CN118964589B侵权必究
粤ICP备2023148730 号-1Suppr @ 2026

文献检索

告别复杂PubMed语法，用中文像聊天一样搜索，搜遍4000万医学文献。AI智能推荐，让科研检索更轻松。

立即免费搜索

文件翻译

保留排版，准确专业，支持PDF/Word/PPT等文件格式，支持 12+语言互译。

免费翻译文档

深度研究

AI帮你快速写综述，25分钟生成高质量综述，智能提取关键信息，辅助科研写作。

立即免费体验

NCO/OH 比例对由液化木材制成的生物基聚氨酯薄膜性能的影响

Effects of NCO/OH Ratios on Bio-Based Polyurethane Film Properties Made from Liquefied Wood.

作者信息

Palle Ismawati, Lodin Valeritta, Mohd Yunus Ag Ahmad, Lee Seng Hua, Md Tahir Paridah, Hori Naruhito, Antov Petar, Takemura Akio

机构信息

Faculty of Tropical Forestry, Universiti Malaysia Sabah, Jalan UMS, Kota Kinabalu 88400, Sabah, Malaysia.

Department of Wood Industry, Faculty of Applied Sciences, University Teknologi MARA (UiTM) Cawangan Pahang Kampus Jengka, Bandar Tun Razak 26400, Pahang, Malaysia.

出版信息

Polymers (Basel). 2023 Feb 24;15(5):1154. doi: 10.3390/polym15051154.

DOI:10.3390/polym15051154
PMID:36904395
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10007325/
Abstract

The compatibility between isocyanate and polyol plays an important role in determining a polyurethane product's performance. This study aims to evaluate the effect of varying the ratios between polymeric methylene diphenyl diisocyanate (pMDI) and liquefied wood polyol on the polyurethane film properties. wood sawdust was liquefied in polyethylene glycol/glycerol co-solvent with HSO as a catalyst at 150 °C for 150 min. The liquefied wood was mixed with pMDI with difference NCO/OH ratios to produce film through the casting method. The effects of the NCO/OH ratios on the molecular structure of the PU film were examined. The formation of urethane, which was located at 1730 cm, was confirmed via FTIR spectroscopy. The TGA and DMA results indicated that high NCO/OH ratios increased the degradation temperature and glass transition from 275 °C to 286 °C and 50 °C to 84 °C, respectively. The prolonged heat appeared to boost the crosslinking density of the polyurethane films, which finally resulted in a low sol fraction. From the 2D-COS analysis, the hydrogen-bonded carbonyl (1710 cm) had the most significant intensity changes with the increasing NCO/OH ratios. The occurrence of the peak after 1730 cm revealed that there was substantial formation of urethane hydrogen bonding between the hard (PMDI) and soft (polyol) segments as the NCO/OH ratios increased, which gave higher rigidity to the film.

摘要

异氰酸酯与多元醇之间的相容性在决定聚氨酯产品性能方面起着重要作用。本研究旨在评估改变聚合亚甲基二苯基二异氰酸酯（pMDI）与液化木材多元醇的比例对聚氨酯薄膜性能的影响。将木屑在聚乙二醇/甘油共溶剂中，以硫酸作为催化剂，于150℃下液化150分钟。将液化木材与具有不同NCO/OH比例的pMDI混合，通过流延法制备薄膜。研究了NCO/OH比例对聚氨酯薄膜分子结构的影响。通过傅里叶变换红外光谱（FTIR）证实了位于1730 cm处氨基甲酸酯的形成。热重分析（TGA）和动态热机械分析（DMA）结果表明，较高的NCO/OH比例分别将降解温度和玻璃化转变温度从275℃提高到286℃以及从50℃提高到84℃。长时间加热似乎提高了聚氨酯薄膜的交联密度，最终导致较低的溶胶分数。从二维相关光谱（2D-COS）分析可知，随着NCO/OH比例的增加，氢键羰基（1710 cm）的强度变化最为显著。1730 cm之后峰的出现表明，随着NCO/OH比例的增加，硬段（PMDI）和软段（多元醇）之间大量形成了氨基甲酸酯氢键，这使薄膜具有更高的刚性。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7deb/10007325/a71db7c6ac2c/polymers-15-01154-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7deb/10007325/87a5ac0e30fe/polymers-15-01154-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7deb/10007325/282e15da112d/polymers-15-01154-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7deb/10007325/e8201ee41c7b/polymers-15-01154-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7deb/10007325/790b94a97b4b/polymers-15-01154-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7deb/10007325/86bb26143af3/polymers-15-01154-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7deb/10007325/2ae4821d0569/polymers-15-01154-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7deb/10007325/96c05741b3ce/polymers-15-01154-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7deb/10007325/9d5e18737f5c/polymers-15-01154-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7deb/10007325/8e63e1a0f35a/polymers-15-01154-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7deb/10007325/a71db7c6ac2c/polymers-15-01154-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7deb/10007325/87a5ac0e30fe/polymers-15-01154-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7deb/10007325/282e15da112d/polymers-15-01154-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7deb/10007325/e8201ee41c7b/polymers-15-01154-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7deb/10007325/790b94a97b4b/polymers-15-01154-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7deb/10007325/86bb26143af3/polymers-15-01154-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7deb/10007325/2ae4821d0569/polymers-15-01154-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7deb/10007325/96c05741b3ce/polymers-15-01154-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7deb/10007325/9d5e18737f5c/polymers-15-01154-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7deb/10007325/8e63e1a0f35a/polymers-15-01154-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7deb/10007325/a71db7c6ac2c/polymers-15-01154-g010.jpg

相似文献

1
Effects of NCO/OH Ratios on Bio-Based Polyurethane Film Properties Made from Liquefied Wood.NCO/OH 比例对由液化木材制成的生物基聚氨酯薄膜性能的影响
Polymers (Basel). 2023 Feb 24;15(5):1154. doi: 10.3390/polym15051154.
2
Network structures and thermal properties of polyurethane films prepared from liquefied wood.由液化木材制备的聚氨酯薄膜的网络结构和热性能
Bioresour Technol. 2001 Mar;77(1):33-40. doi: 10.1016/s0960-8524(00)00136-x.
3
Preparation of Polyurethane Adhesives from Crude and Purified Liquefied Wood Sawdust.由粗制和精制的液化木屑制备聚氨酯胶粘剂
Polymers (Basel). 2021 Sep 25;13(19):3267. doi: 10.3390/polym13193267.
4
Polyurethane Adhesives Based on Oxyalkylated Kraft Lignin.基于氧烷基化硫酸盐木质素的聚氨酯胶粘剂。
Polymers (Basel). 2022 Dec 5;14(23):5305. doi: 10.3390/polym14235305.
5
Bio-Based Polyurethane Networks Derived from Liquefied Sawdust.源自液化木屑的生物基聚氨酯网络
Materials (Basel). 2021 Jun 7;14(11):3138. doi: 10.3390/ma14113138.
6
Impact of Bark-Sourced Building Blocks as Substitutes for Fossil-Derived Polyols on the Structural, Thermal, and Mechanical Properties of Polyurethane Networks.树皮衍生的建筑模块替代化石衍生多元醇对聚氨酯网络结构、热性能和力学性能的影响。
Polymers (Basel). 2023 Aug 22;15(17):3503. doi: 10.3390/polym15173503.
7
The Influence of Neem Oil and Its Glyceride on the Structure and Characterization of Castor Oil-Based Polyurethane Foam.印楝油及其甘油酯对蓖麻油基聚氨酯泡沫结构和特性的影响。
Polymers (Basel). 2021 Jun 21;13(12):2020. doi: 10.3390/polym13122020.
8
Castor Oil-Based Polyurethane Resin for Low-Density Composites with Bamboo Charcoal.用于含竹炭的低密度复合材料的蓖麻油基聚氨酯树脂
Polymers (Basel). 2018 Oct 5;10(10):1100. doi: 10.3390/polym10101100.
9
Eco-Friendly Tannin-Based Non-Isocyanate Polyurethane Resins for the Modification of Ramie ( L.) Fibers.用于苎麻纤维改性的环保型单宁基非异氰酸酯聚氨酯树脂
Polymers (Basel). 2023 Mar 16;15(6):1492. doi: 10.3390/polym15061492.
10
Producing Lignin-Based Polyols through Microwave-Assisted Liquefaction for Rigid Polyurethane Foam Production.通过微波辅助液化制备用于硬质聚氨酯泡沫生产的木质素基多元醇。
Materials (Basel). 2015 Feb 10;8(2):586-599. doi: 10.3390/ma8020586.

本文引用的文献

1
One-Shot Synthesis of Thermoplastic Polyurethane Based on Bio-Polyol (Polytrimethylene Ether Glycol) and Characterization of Micro-Phase Separation.基于生物多元醇（聚三亚甲基醚二醇）的热塑性聚氨酯的一步法合成及微相分离表征
Polymers (Basel). 2022 Oct 12;14(20):4269. doi: 10.3390/polym14204269.
2
Preparation of Polyurethane Adhesives from Crude and Purified Liquefied Wood Sawdust.由粗制和精制的液化木屑制备聚氨酯胶粘剂
Polymers (Basel). 2021 Sep 25;13(19):3267. doi: 10.3390/polym13193267.
3
Bio-Based Polyurethane Networks Derived from Liquefied Sawdust.
源自液化木屑的生物基聚氨酯网络
Materials (Basel). 2021 Jun 7;14(11):3138. doi: 10.3390/ma14113138.
4
Soybean-oil-based waterborne polyurethane dispersions: effects of polyol functionality and hard segment content on properties.大豆油基水性聚氨酯分散体：多元醇官能度和硬段含量对性能的影响
Biomacromolecules. 2008 Nov;9(11):3332-40. doi: 10.1021/bm801030g. Epub 2008 Oct 21.
5
Network structures and thermal properties of polyurethane films prepared from liquefied wood.由液化木材制备的聚氨酯薄膜的网络结构和热性能
Bioresour Technol. 2001 Mar;77(1):33-40. doi: 10.1016/s0960-8524(00)00136-x.