Theo G. M. van de Ven
McGill University
FlocculationAdsorptionNanoparticleCopolymerComposite materialNanotechnologyInorganic chemistryCationic polymerizationChemistryPolymer chemistryMaterials sciencePeriodatePulp (paper)NanocelluloseCelluloseChemical engineeringPolymerCellulose fiberColloidContact angle
167Publications
34H-index
2,897Citations
Publications 176
Newest
#1Roya Koshani (McGill University)H-Index: 8
#2Jane E. Eiyegbenin (McGill University)H-Index: 1
Last. Theo G. M. van de Ven (McGill University)H-Index: 34
view all 4 authors...
Abstract null null Hypothesis null The synthesis and characterization of aminated nanocrystalline cellulose (ANCC), a new member of the hairy nanocellulose family, is reported. Hairy nanocelluloses consist of a crystalline rod-like body with amorphous cellulose chains (“hairs”) at both ends, on which various functional groups can be accommodated. In ANCC these groups are reactive primary amine groups, which are useful for bioconjugation- and Schiff base-centered modifications. We hypothesize tha...
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#1Martin Chewe Sichinga (McGill University)
#2Roya Koshani (McGill University)H-Index: 8
Last. Theo G. M. van de Ven (McGill University)H-Index: 34
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Abstract null null The discharge of textile dyes in water systems, due to poor binding to fabrics, is a major health and environmental concern. The majority of synthetic dyes used in textile are hazardous and carcinogenic. Despite efforts in addressing challenges associated with covalent binding of dyes to fibers and effluent filtration, there has been no promising green solution based on green materials and chemistry. Here, we demonstrate that dialdehyde cellulose (DAC) engineered through the c...
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#1Marzieh Heidari Nia (McGill University)H-Index: 2
#2Ali Reza Kiasat (Shahid Chamran University of Ahvaz)H-Index: 24
Last. Theo G. M. van de Ven (McGill University)H-Index: 34
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We designed a new unique amphoteric monodisperse colloid with a large complex internal structure, in which silica surfaces are bridged with an organic cross-linker. The rationale was that such colloids would be excellent adsorbents for cationic and anionic dyes and, when doped with noble metal nanoparticles, would be an excellent catalyst for the reduction of a variety of organic compounds. In the first step, the organo-silica bridging agent (bivalent organic cross-linkers) DABCO-S (silanated DA...
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#1Marzieh Heidari Nia (McGill University)H-Index: 2
#2Said Ashkar (McGill University)
Last. Theo G. M. van de Ven (McGill University)H-Index: 34
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Cellulose is the most abundant renewable biomaterial on earth and beta-cyclodextrin (BCD) is among the most commonly used biocompatible drug encapsulation agents. Combining these bio-organic materials is a very powerful approach to greatly enhance the bioavailability of many drugs. These systems also allow for optimal selective drug release profiles, high biocompatibility, as well as “green nanomedicine” approaches that are eco-friendly in their synthesis and have minimal ecological toxicity. he...
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#1Mohammadhadi Moradian (McGill University)H-Index: 1
#2Nur Alam (Lakehead University)H-Index: 12
Last. Theo G. M. van de Ven (McGill University)H-Index: 34
view all 3 authors...
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#1F. Mahrous (McGill University)H-Index: 5
#2Roya Koshani (McGill University)H-Index: 8
Last. Theo G. M. van de Ven (McGill University)H-Index: 34
view all 5 authors...
From a green chemistry perspective, cryogrinding of cellulose fibers conducted under mild conditions is introduced as a rapid, facile, and scalable methodology for the mechanochemical synthesis of cellulose nanocrystals. Traditionally, they are synthesized in a solution using acid/oxidation-based methods in a multi-stage process. This work presents a method for the production of hairy carboxylated nanocrystalline cellulose (HNC) through a mechanochemical process from wood kraft pulp, using two d...
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#1Md. Shahidul Islam (McGill University)H-Index: 56
#2Nur Alam (Lakehead University)H-Index: 12
Last. Theo G. M. van de Ven (McGill University)H-Index: 34
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Textile filaments were fabricated from a solution obtained from carboxymethylated cellulose dissolved in aqueous NaOH solution, by wet spinning in an acid coagulation bath. Spinning is possible for modified cellulose with a carboxyl group content of at least 1.3 mmol/g cellulose. A post-treatment—heating in the presence of sodium hypophosphite—improved the properties of these filaments. This is a novel process, much more environmentally friendly than the viscose process for the production of ray...
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#1Roya KoshaniH-Index: 8
#2Jingbin Zhang (McGill University)H-Index: 1
Last. Yixiang Wang (McGill University)H-Index: 29
view all 5 authors...
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#1Marzieh Heidari Nia (McGill University)H-Index: 2
#2Roya Koshani (McGill University)H-Index: 8
Last. Theo G. M. van de Ven (McGill University)H-Index: 34
view all 6 authors...
We designed three types of hollow-shaped porous silica materials via a three-step biotemplate-directed method: porous hollow silica nanorods, hollow dendritic fibrous nanostructured silica (DFNS), ...
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