Oxypropylation of Brazilian Pine-Fruit Shell Evaluated by Principal Component Analysis  

作　　者：Stephany Cde Rezende João APinto Isabel PFernandes Fernanda VLeimann Maria-Filomena Barreiro 

机构地区：[1]Laboratory of Separation and Reaction Engineering-Laboratory of Catalysis and Materials(LSRE-LCM),Polytechnic Institute of Bragança,Bragança,Portugal [2]Programa de Pós-Graduação em Tecnologia de Alimentos(PPGTA),Universidade Tecnológica Federal do Paraná-UTFPR Campus Campo Mourão,Via Rosalina Maria Dos Santos,1233.CEP 87301-899.Caixa Postal:271,Campo Mourão-PR-Brasil [3]Mountain Research Centre(CIMO),Polytechnic Institute of Bragança,Bragança,Portugal

出　　处：《Journal of Renewable Materials》2018年第7期715-723,共9页可再生材料杂志（英文）

摘　　要：Pine-fruit shell (PFS) is a lignocellulosic residue derived from the fruit of Araucaria angustifolia, a coniferoustree native of South America, part of a whole vegetation of the Atlantic Forest, found in the South and Southwestof Brazil. In this work PFS will be characterized and used in the production of PFS-based polyols throughoxypropylation. Three series were chosen (PFS/propylene oxide (PO) (w/v, g/mL) of 30/70, 20/80 and 10/90)with four catalyst levels (5%, 10%, 15% and 20%, (w/w, PFS based)). Oxypropylation occurred at moderateconditions of temperature, pressure and time giving rise to liquid polyols with a homopolymer content (PPO)ranging from 4-65%, a hydroxyl number (IOH) between 257-605 mg KOH/g and viscosities (V) varying from0.76 Pa.s to 373.90 Pa.s (20°C) for the series 20/80 and 10/90, while for the series 30/70, the viscosity reachedvalues higher than 500 Pa.s, 20°C. The unreacted PFS (UR) varied between 3.6% and 77.4% (PFS-basis). Afterthe PFS-based polyols production and characterization, a principal component analysis (PCA) was performed inorder to evaluate the established interactions between the used formulation variables and the obtained polyolproperties. The PCA analysis allowed to clarify the interactions between PFS and PO contents and the finalbiopolyol properties (PPO, IOH, V and UR). This approach showed to be a simple method to rationally analyzethe influence of the input formulation variables on the final polyol properties.

关 键 词：Principal components analysis Brazilian pine-fruit shell (PFS) oxypropylation POLYOLS 

分 类 号：R73[医药卫生—肿瘤]