Improvements of Thermal and Thermochemical Properties of Rosin by Chemical Transformation for Its Use as Biofuel
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ORIGINAL PAPER
Improvements of Thermal and Thermochemical Properties of Rosin by Chemical Transformation for Its Use as Biofuel Duban García1 · Felipe Bustamante1 · Edwin Alarcón1 · Juan Miguel Donate2 · Laureano Canoira3 · Magín Lapuerta4 Received: 23 July 2019 / Accepted: 21 October 2019 © Springer Nature B.V. 2019
Abstract The use of raw materials from renewable sources has become an important topic for different industries. Pine oleoresin is one of the most important renewable sources. It is composed of a broad range of chemical substances from volatile molecules to complex compounds. The resinic fraction, known as rosin or colophony, comprises approximately 80% of oleoresin. This fraction has become the most attractive one from the economic standpoint. Rosin is a complex mixture of diterpenic acids and is typically used in formulation of adhesives, coating materials, rubbers, printing inks, among others. Although their transformations have been studied, scarce information on the thermal and thermochemical properties of rosin and rosinderived products has been reported. In this work some of these properties have been estimated to evaluate the influence of chemical transformations such as reduction, isomerization and esterification of rosin components. The estimations have been compared to the literature data and to some experimental values. The interest of some of these transformations is based on the reduction in melting and boiling temperatures observed, although such reductions are probably not enough to use these substances as fuel components. Graphic Abstract
Keywords Rosin · Isomerization · Reduction · Esterification · Properties estimation
* Magín Lapuerta [email protected] Extended author information available on the last page of the article
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Statement of Novelty The use of rosin as fuel could gain high interest in the future from the economic standpoint (rosin is considered a byproduct in paper industry and it is a major component of pine oleoresin). Studies about rosin transformation into fuel components under mild conditions are scarce. This study proposes a simple methodology to identify strengths and weaknesses of the molecules derived from rosin to be used as fuel components, based on widely used estimation tools. No reported study has been found with this kind of analysis for this kind of molecules, and our work provides useful information to take decisions concerning rosin applications, and specifically for use as fuel components.
Introduction Rosin or colophony is a mixture of diterpene resin acids grouped in two families: abietic and pimaric acids, according to their molecular structure [1]. Rosin is obtained as the less volatile stream of distillation of oleoresin, which is obtained from conifer trees [1, 2]. There are different kinds of rosin depending on the recovery method: wood rosin (extracted from pine stumps), gum rosin (tapped from living pine trees), and tall oil rosin (obtained as a by-product in paper pulp production) [2]. Rosin is empl
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