Essays about: "paper chemistry"

Showing result 1 - 5 of 35 essays containing the words paper chemistry.

1. 1. Modified cellulose synthesized by different deep eutectic solvents as an additive in paper making process

   University essay from Karlstads universitet

   Author : Shiniar Said Saleh; [2023]
   Keywords : green chemistry; dry strength additives; deep eutectic solvents; sodium periodate oxidation; charge density; dewatering; mechanical strength.;

   Abstract : The environmental concerns that come with the currently used traditional papermaking process where petroleum-based additives are used, has tempted researchers to study “green” additives by introducing environmentally friendly modifications of cellulose as an additive in the papermaking process. This thesis will spin further on that by producing additives with different charge densities and focus on to incorporate an etherification reaction into potentially greens systems based on non-toxic and readily biodegradable deep eutectic solvent (DES). READ MORE

3. 2. Impact of pulp chemical composition and fiber morphology on hygroexpansion and strength properties of kraftliner

   University essay from Lunds universitet/Kemiteknik (CI)

   Author : Serdar Unal; [2023]
   Keywords : Chemical Engineering; Hygroexpansion; Pulp; Kraftliner; Tensile strength; Iso-brightness; Chemistry;

   Abstract : Kraftliner is the unbleached pulp used in the outermost layer of corrugated cardboard. Like other types of paper, it is produced from wood chips as a raw material. Kraftliner is known for its high tensile strength, tear resistance, compressive strength, etc., making it suitable for packaging material for heavy objects. READ MORE

4. 3. Synthesis and Investigation of Nitrile-Containing Polymers Inspired by Lignin

   University essay from Lunds universitet/Centrum för analys och syntes

   Author : Tobias Lindborg; [2022]
   Keywords : Lignin; Polymer; Renewable; Bioresource; Glass transition temperature; Nitrile; Polymer technology; Chemistry; Technology and Engineering;

   Abstract : The lignin-inspired derivatives coniferyl aldehyde and sinapyl aldehyde were used to prepare nitrile-containing methacrylate monomers with the aim to synthesize bio-based polymers exhibiting high glass transition temperatures (Tgs). The aldehydes were initially transformed to the corresponding nitriles and then underwent methacrylation before being polymerised by free-radical polymerisation. READ MORE

5. 4. Deep learning for nanofluidic scattering microscopy

   University essay from

   Author : Gustaf Sjösten; [2021-06-09T11:22:05Z 2021-06-09T11:22:05Z 2021 2020]
   Keywords : data analysis; machine learning; deep convolutional neural networks; nanofluidic scattering spectroscopy; biomolecules; physical chemistry; dark-field microscopy;

   Abstract : A novel technique for label-free, real-time characterization of single biomolecules called Nanofluidic Scatter Microscopy (NSM) has recently been developed by a the Langhammer research group at Chalmers. We have created a machine learning (ML) framework consisting of deep convolutional neural networks such as U-nets, FCNNs, and YOLO in order to characterize single biomolecules through kymographs collected through NSM, as an alternative approach to a standard data analysis method (SA). READ MORE

6. 5. Overcoming ERP implementation challenges with communication

   University essay from

   Author : Anton Müller; Tasmia Syed; [2021]
   Keywords : ERP; Implementation; Communication; Challenges; Effective Communication;

   Abstract : To stay competitive, organizations look to IT systems such as ERPs to assist them in their business goals. While there are organization-wide benefits available for organizations that successfully implement ERPs, the associated risks are great, and many challenges threaten to harm the process. READ MORE