相关实验视频
Updated: May 21, 2025
05:57
Quantitative 31P NMR Analysis of Lignins and Tannins
Published on: August 2, 2021
12.1K
氧基尼:一种来自动力纸厂的新型技术基尼
Jenny Sjöström1, Louise Brandt1,2, Gunnar Henriksson1,2
1Department of Fiber and Polymer Technology, School of Engineering Sciences in Chemistry, Biotechnology and Health, Royal Institute of Technology, KTH, Teknikringen 56-58, Stockholm 114 28, Sweden.
ACS omega
|May 19, 2025
概括
研究人员开发了一种方法来从氧气脱中分离"oxlignin",这是一个有希望的基于生物的替代品. 这种红素具有很高的溶解性和潜在的应用,提供了一个可持续的资源.
科学领域:
- 生物质的价值化 生物质的价值化
- 聚合物化学 聚合物化学
- 可持续材料 可持续材料
背景情况:
- 来自生物质的生物聚合物 - - 氨酸经常被不足利用,主要被燃烧以获取能源.
- Kraft 纸加工过程产生素,其残留量在氧气脱过程中溶解.
- 探索素的替代用途对于减少对化石资源的依赖至关重要.
研究的目的:
- 提出和验证一种方法来分离氧气脱过程中溶解的素 (oxlignin).
- 描述已分离的氧线素的结构性质和可溶性.
- 评估oxlignin作为一种潜在的替代商业lignin在各种应用中的替代品.
主要方法:
- 酸性沉被用来从氧气脱液中部分分离氧.
- 分析技术包括UV-vis,31P NMR,FT-IR,SEC和TGA用于表征.
- 在四种不同的溶剂中进行了溶解性测试,并与商业强力金相比较.
主要成果:
- 酸性沉有效地将oxlignin从氧气脱过程中分离出来.
- 奥克斯林尼在水,甲醇和乙醇中表现出水友性和高度溶解性.
- 与 kraft 素相比,oxlignin 的基含量较低,碳酸酸含量较高.
结论:
- 氧宁是一种可行的宁分离物,可以从氧气脱中分离出来.
- 其有利的溶解性和结构特征表明,它可以作为替代石硫酸盐的潜在应用.
- 对oxlignin属性的进一步研究可以释放其在可持续材料开发中的潜力.
相关概念视频
01:21Wood Products
72
Wood products encompass a broad range of materials crafted from wood strands, veneers, lumber, and even waste wood-like shreds, designed for both structural and nonstructural purposes. Various specialized wood products have been developed to enhance strength, durability, and versatility in building applications.
Glue-laminated wood, often referred to as glulam, combines multiple smaller pieces of dimensional lumber using adhesives to form a single, larger piece. Cross-laminated timber consists...
Glue-laminated wood, often referred to as glulam, combines multiple smaller pieces of dimensional lumber using adhesives to form a single, larger piece. Cross-laminated timber consists...
72
01:19Lumber
98
Lumber is derived from logs which are harvested, debarked, and processed into long pieces with a rectangular cross-section. The transformation of logs into lumber involves multiple steps, beginning with an automated saw that slices the log into slabs. These slabs are then transported via a conveyor belt to smaller saws, where they are cut into square-edged pieces of specific widths.
Initially, the surfaces of these lumber pieces are rough, and their dimensions may vary slightly from one end to...
Initially, the surfaces of these lumber pieces are rough, and their dimensions may vary slightly from one end to...
98
01:15Cellulose and Pectic Polysaccharides
3.4K
Every plant cell has a cell wall that protects the cell, provides structural support, and gives the cell shape. Cellulose, the main structural component of the plant cell wall, makes up over 30% of plant matter. It is the most abundant organic compound on earth. Cellulose is an unbranched polysaccharide composed of linear chains of glucose molecules linked by β (1→4) glycosidic bonds.
As a cell matures, its cell wall specializes according to its type. For example, the...
As a cell matures, its cell wall specializes according to its type. For example, the...
3.4K