Lignin In Acanthopanax Senticosus Residue Hydroxyl Methylation Modification And Performance Study

Siberian Ginseng(Acanthopanax senticosus)Department Araliaceae(Araliaceae)plants,mainly in China’s Heilongjiang,Jilin,Liaoning,Hebei and other places,are typical of Northeast China medicinal plants.Traditional Chinese Medicine and Materia Medica think Acanthopanax is qi-tonifying drug,can replenishing qi spleen,kidney and nerves,is widely used to treat heart disease,hypertension,rheumatic heart disease.At present,China Acanthopanax national annual demand more than 500,000 t,Acanthopanax extract the main active ingredient is the use of water extraction,methanol,ethanol extraction,etc.,every year a large amount of Acanthopanax roots dregs residue is deemed waste disposal,causing serious environmental pollution.Acanthopanax dregs residue is mainly composed of cellulose and lignin,due to low forest cover,a serious shortage of timber resources,if the effective use of Acanthopanax dregs residue will be of great significance.The chemical reactivity of the lignin is a phenolic hydroxyl group,alcoholic hydroxyl group and a phenolic hydroxyl group ortho main structural unit is proportional to the content of active hydrogen.Lignin biodegradable,non-toxic,renewable,etc.,which is regarded as excellent green chemical raw materials.Use of large amounts of phenol in the phenolic resin synthesis process,phenol toxicity petrochemical products,and can therefore be used non-toxic,the alternative renewable lignin phenol preparation lignin phenolic resin,thereby reducing the use amount of phenol to achieve the utilization of waste,to achieve resource of governance purposes.At present,the low cost and its various modified lignin derivatives are widely used in veterinary medicine preparations,such as sodium lignosulphonate used as a veterinary medicine water dispersible granule and suspending agent,wettable powder of dispersant,or preparation of veterinary drug microcapsule wall material used for condensing reports will also dry grinding of lignin and veterinary drugs and additives made from mixing,granulation,drying grain slow-release veterinary drugs,but due to the lignin solubility in water is poor,so drugs slow-release effect is not good.Phenolic strong hydrophilic polymer,preferably water soluble,phenolic resin can be used as a medicine to improve the release effect wall material.Therefore,this paper,non-toxic,renewable alternative lignin preparation of lignin phenol resin,ie Acanthopanax dregs residue was extracted with ethanol as raw Acanthopanax Acanthopanax dregs dregs organic residue obtained France lignin,soda lignin residues reference Acanthopanax dregs of the dregs residue ethanol Acanthopanax hydroxymethylation lignin modified to improve reactivity of lignin by single factor and orthogonal effects of two experiments were optimal conditions lignin hydroxymethylation;obtained two kinds of lignin and phenolic resin properties were studied and characterized,for the development of sustained-release preparation of good water-soluble phenolic resin to provide a theoretical basis for the wall material.The main contents;Ⅰ.Using FTIR,1H-NMR,TG,elemental analysis and other modern instruments and Mancini means of chemical analysis on the composition of the ethanol method lignin and alkali lignin,element content and functional groups for qualitative and quantitative analysis in order to understand the ethanol lignin response characteristics of the elements and alkali lignin.Ⅱ.Through single factor and orthogonal experiments to explore the lignin the hydroxymethyl activation process conditions,FTIR and chemical analysis were used to analyze the the hydroxymethylation lignin characterization.Ⅲ.Explore the alkali lignin and ethanol method lignin-phenolic compound adhesive preparation process,the lignin-phenolic compound adhesive structure and performance relationship was characterized by FTIR and means of chemical analysis.Ⅳ.Through lignin-phenolic composite adhesive contact angle,DSC,formaldehyde release and bonding strength analysis means for lignin-phenolic compound adhesive wetting properties and curing reaction kinetic mechanism,and the effects of lignin-phenolic compound adhesive glueperformance.