Surface Modification of Talc Particles with Phthalimide: Study of Composite Structure and Consequences on Physical, Mechanical, and Optical Properties of Deinked Pulp

Encapsulation of precipitated calcium carbonate fillers using carboxymethyl cellulose /polyaluminium chloride: preparation and its influence on mechanical and optical properties of paper

“…Tear strength of paper depends on the fiber strength, which is a property of instinct nature of fiber as well as fiber length and flexibility (Casey 1981, Marzbani et al 2016, Akeem-Azeez et al 2016. The effect of different addition levels of CMC/PAC modified PCC, unmodified PCC and PCC/CPAM on tear strength are shown in Figure 4.…”

“…Many efforts have been reported to alleviate or overcome the drawbacks related to filler addition, including fillers incorporating into the lumens and/or cell walls of pulp fibers (Klungness et al 2000), in situ precipitation of filler particles on fines/fibrils (Subramanian et al 2007, Subramanian et al 2008, using novel fillers such as starch-based biodegradable organic fillers, and fibrous/high-aspectratio inorganic fillers (Hu and Deng 2004, Mathur 2004, Mollaahmad 2008, Shen et al 2010, use of functional strengthening agents (Chen et al 2005, Fahmy and, fiber modification (Bratskaya et al 2006, Kang 2007, and filler modification (Gill 1992, Laleg et al 2008, Ibrahim et al 2009, Shen et al 2010, Marzbani et al 2016. In recent years, filler modification methods have been specially focusing on biodegradable and renewable carbohydrate polymers (such as starch, cellulose, and chitosan) as a promising procedure in papermaking (Yoon and Deng 2007, Zhao et al 2008, Nelson and Deng 2008, Shen et al 2009, Song et al 2009a, Song et al 2009b).…”

CuII Anchored onto the Magnetic Talc: A New Magnetic Nanostructured Catalyst for the One‐Pot Gram‐Scale Synthesis of 1H‐Pyrazolo[1,2‐b]phthalazine‐5,10‐dione Derivatives

“…(Figure ) The FT‐IR spectra of the talc ( I ) (a), γ‐Fe 2 O 3 /talc NPs ( II ) (b), γ‐Fe 2 O 3 /talc/Cu II NPs ( III ) (c), and 5 th reused γ‐Fe 2 O 3 /talc/Cu II NPs ( III ) (d) are illustrated in Figure . As it is evident in Figure a, a sharp absorption band at 3676 cm −1 is related to the OH symmetric stretching vibrations of −SiOH and −MgOH groups on the lateral faces of talc . Two adsorption bands appearing at 1018 cm −1 and 669 cm −1 correspond to the asymmetric and symmetric stretching vibrations of the Si−O−Si bond on the basal surface of talc.…”

“…Furthermore, an absorption band at 466 cm −1 is assigned to the bending vibration of Si−O−Si bond . The vibrational frequencies of Mg−O bond (in octahedral layer) appears at 675 and 458 cm −1 . In the FT‐IR spectrum of talc/γ‐Fe 2 O 3 NPs ( II ) (Figure b), the presence of γ‐Fe 2 O 3 in the talc structure can be identified by the band appearing around 620–570 cm −1 (corresponding to the stretching vibration of Fe−O bonds), which is covered by stretching vibrations of Si−O and Mg−O bonds .…”

“…Two adsorption bands appearing at 1018 cm −1 and 669 cm −1 correspond to the asymmetric and symmetric stretching vibrations of the Si−O−Si bond on the basal surface of talc. Furthermore, an absorption band at 466 cm −1 is assigned to the bending vibration of Si−O−Si bond . The vibrational frequencies of Mg−O bond (in octahedral layer) appears at 675 and 458 cm −1 .…”