Micromechanics of Mechanical, Thermomechanical, and Chemi-Thermomechanical Pulp from Orange Tree Pruning as Polypropylene Reinforcement: A Comparative Study

Thermosets as compatibilizers at the isotactic polypropylene film and thermomechanical pulp fiber interphase

The objective of this study was to improve interfacial adhesion properties at the interface of thermomechanical pulp (TMP) fiber and isotactic polypropylene (iPP) using thermoset adhesives such as phenol formaldehyde (PF) and urea formaldehyde (UF). This study also attempted to achieve fiber-to-fiber adhesion using thermoset adhesives before the molten iPP would flow into the fiber web. The fra...

Selective TEMPO-Mediated Oxidation of Thermomechanical Pulp

Carboxylic acid groups were introduced onto thermomechanical pulp (TMP) long fiber surfaces by 2,2,6,6,tetramethylpiperidine-1-oxyl radical (TEMPO)-mediated oxidation in the present study. The number of introduced carboxylic groups was closely related to the NaClO dosage, and more flexible fibers with lower curl and kink index were generated. Lignin was dissolved during the TEMPO-mediated oxida...

Thermomechanical process intensification for oil extraction from orange peels

Thermomechanical Pulp Fiber Surface Modification for Enhancing the Interfacial Adhesion with Polypropylene

Chemical coupling on the thennomechanical pulp (TMF') fiber improved tensile shrength of the TMP fiber handsheet and isotactic polypropylene film laminates (TPL). For the maleic anhydride W) with benzoyl peroxide (%PO) as an initiator, tensile strength i n d 52% with the TMP fiber treatment over untreated laminates. The optimum strength jmperties were obtaiaed with an MA and BPO ratio of 21. Sc...

Environmental effects on the mechanical and thermomechanical properties of aspen fiber-polypropylene composites

The mechanical properties of newly developed aspen fiber–polypropylene composites (APC) were experimentally explored and numerically predicted at the temperatures and humidity that are typical for domestic housing applications. The mechanical properties of APCs with five different fiber-loadings were evaluated at the room temperature, 4 �C, and 40 �C. Environmental effects on the mechanical pro...