Article
Biochemistry & Molecular Biology
Marcin Borowicz, Marek Isbrandt, Joanna Paciorek-Sadowska
Summary: The research aimed to obtain two new eco-polyols based on waste polylactide (PLA) and tested their effects on rigid polyurethane and polyisocyanurate foams. Analysis showed that partial replacement of petrochemical polyol by eco-polyols resulted in better performance in terms of density, compressive strength, brittleness, water absorption, and aging resistance for both RPU/PIR and PRU foams.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Polymer Science
Christian Henry, Graham Tindall, Mark C. Thies, Mojgan Nejad
Summary: This study explores the use of fractionated lignin as a component in the formulation of rigid PUR/PIR foams. Both hybrid poplar lignin and ALPHA-fractionated lignin were used as substitutes for petrochemical-based polyol in low-density foams. The ALPHA-based lignin outperformed the as-recovered lignin in terms of foam properties, and showed comparable performance to the control foam.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Polymer Science
Sanita Reinerte, Vilhelmine Jurkjane, Ugis Cabulis, Arturs Viksna
Summary: This study analyzed rigid polyurethane (PU) and polyisocyanurate (PIR) foam samples made from renewable material through pyrolysis gas chromatography mass spectrometry (Py-GC/MS). The main thermal degradation components were found to originate from the decomposition of isocyanate, forming suspected carcinogens and mutagens. The focus was on identifying and evaluating the relative quantities of the produced gaseous products and examining their hazardousness.
Article
Polymer Science
Xue Qian, Qiang Liu, Laibao Zhang, Hui Li, Jiwen Liu, Shouke Yan
Summary: In this study, a reactive flame-retardant diol called BEOPMS was synthesized and combined with PMDI for the fabrication of PIR foams. The results showed that BEOPMS effectively improved the flame retardancy of the foams, and higher LOI and char residue yield values were achieved at specific NCO/OH ratios and phosphorus contents.
POLYMER DEGRADATION AND STABILITY
(2022)
Article
Polymer Science
Cosimo Brondi, Ernesto Di Maio, Luigi Bertucelli, Vanni Parenti, Thomas Mosciatti
Summary: The influence of air bubbles inclusion on the foaming of water blown and water-pentane blown rigid polyurethane and polyisocyanurate foams is dependent on whether air bubbles are included during the mixing process, which affects the evolution of foam morphology.
Article
Biochemistry & Molecular Biology
Christian Henry, Akash Gondaliya, Mark Thies, Mojgan Nejad
Summary: In this study, 19 unmodified lignins from various sources and isolation processes were used to replace petroleum-based polyol in foam formulations. The properties of the resulting lignin-based foams were compared with a control foam. It was found that lignin-based foams with higher pH, potassium, sodium, calcium, magnesium, and aliphatic/p-hydroxyphenyl hydroxyl group contents exhibited better performance.
Article
Engineering, Chemical
Christian Henry, Mojgan Nejad
Summary: In this study, unmodified kraft softwood lignin was used to replace petroleum-based polyol in low-density rigid polyurethane/polyisocyanurate foam. Different levels of lignin incorporation were investigated for their effects on foam properties. The foam made with 100% lignin demonstrated outstanding fire resistance, reducing burn length by 127%.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Biochemistry & Molecular Biology
Joanna Paciorek-Sadowska, Marcin Borowicz, Marek Isbrandt
Summary: The use of evening primrose oil cake as a bio-filler significantly influences the morphology of foams, leading to improved physico-mechanical and thermal insulation properties while reducing flammability. Thorough mixing allows better homogenization of the bio-filler in the polyurethane matrix, resulting in a regular cellular structure.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Materials Science, Paper & Wood
Manon Beaufils-Marquet, Pierre Blanchet, Atif Hussain, Veronic Landry
Summary: Cellulose was studied as a potential filler material for building insulation, and a closed-cell polyurethane foam insulation was developed with varying percentages of cellulose filaments. The viscosity, morphology, and various foam properties were investigated, and the cellulose filaments affected the viscosity and all properties of the resulting insulating material. However, the required performances by the standards of polyurethane foam insulation material were always fulfilled regardless of the amount of cellulose filaments present.
Article
Polymer Science
Berrin Degirmenci, Nesrin Koken, Ahmet Akar
Summary: In this study, combinations of phosphorous-containing fire retardants were used as additives to produce non-toxic smoke suppressant and fire-retardant PIR foams. Different combinations of combustion modifiers decreased the flame height and smoke density of PIR foam. The best combinations included zinc borate with triethyl phosphate, or zinc borate with triethyl phosphate and oligomeric triethyl phosphate, which reduced the burning and smoke formation rate of PIR foam. These findings have practical implications for producing fire-retardant PIR foam in the industry.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Polymer Science
Andrey Acosta, Arthur B. Aramburu, Rafael Beltrame, Darci A. Gatto, Sandro Amico, Jalel Labidi, Rafael de Avila Delucis
Summary: The use of lignocellulosic fillers in rigid polyurethane foams can improve mechanical and insulation properties, but also increase water uptake. Adding furfuryl alcohol can help mitigate the detrimental effects of high water uptake in these systems.
Article
Polymer Science
Sung Jun Park, Seung-Hyun Cho, Hee Won Seo, Jae-Do Nam, Jonghwan Suhr
Summary: The study found that natural cork particles can effectively tailor the viscoelastic properties of composite foams, with Cork/PU composite foams showing an increase in both storage and loss moduli, which is typically compromised for each other.
Article
Mechanics
Hao Wang, Suchao Xie, Zhejun Feng, Kunkun Jing, Jing Zhang, Hui Zhou
Summary: To enhance the mechanical properties of Nomex honeycomb, in-situ foaming using rigid polyurethane (PU) foam and flexible polyurethane foam (NHRPU, NHFPU, collectively NHPU) was performed. Mechanical properties were evaluated through tests, theoretical and finite element methods. The results showed that NHRPU and NHFPU significantly improved energy absorption, with NHRPU enhancing the absorption performance and NHFPU enhancing the resilience of the honeycomb.
COMPOSITE STRUCTURES
(2023)
Article
Chemistry, Physical
Dorota Dukarska, Joanna Walkiewicz, Adam Derkowski, Radoslaw Mirski
Summary: This study investigates the possibility of using sawdust as a filler for polyurethane foams. The results show that adding up to 10% sawdust can improve the foam's properties while slightly decreasing its compressive and bending strengths, and increasing water absorption.
Article
Chemistry, Multidisciplinary
Beatriz Merillas, Judith Martin-de Leon, Fernando Villafane, Miguel Angel Rodriguez-Perez
Summary: Highly transparent polyisocyanurate-polyurethane (PUR-PIR) aerogels with tunable optical properties were synthesized. The effect of catalyst content on internal structure and optical transmittance was analyzed. Lower catalyst amounts resulted in smaller particles and higher transmittances. The sample thickness and scattering mechanisms were also studied.
Article
Polymer Science
Joanna Paciorek-Sadowska, Marcin Borowicz, Marek Isbrandt
Article
Chemistry, Applied
Joanna Paciorek-Sadowska, Boguslaw Czuprynski, Marcin Borowicz, Joanna Liszkowska
JOURNAL OF CELLULAR PLASTICS
(2020)
Article
Chemistry, Multidisciplinary
Joanna Liszkowska, Krzysztof Moraczewski, Marcin Borowicz, Joanna Paciorek-Sadowska, Boguslaw Czuprynski, Marek Isbrandt
APPLIED SCIENCES-BASEL
(2019)
Article
Polymer Science
Joanna Paciorek-Sadowska, Marcin Borowicz, Marek Isbrandt, Boguslaw Czuprynski, Lukasz Apiecionek
Article
Polymer Science
Marcin Borowicz, Joanna Paciorek-Sadowska, Jacek Lubczak, Boguslaw Czuprynski
Article
Polymer Science
Marcin Borowicz, Joanna Paciorek-Sadowska, Marek Isbrandt, Lukasz Grzybowski, Boguslaw Czuprynski
Article
Polymer Science
Joanna Liszkowska, Marcin Borowicz, Joanna Paciorek-Sadowska, Marek Isbrandt, Boguslaw Czuprynski, Krzysztof Moraczewski
Article
Biochemistry & Molecular Biology
Joanna Paciorek-Sadowska, Marcin Borowicz, Ewelina Chmiel, Jacek Lubczak
Summary: Two polyol raw materials were obtained from metasilicic acid (MSA) and poly(lactic acid) (PLA) waste in the research, used for producing rigid polyurethane foams. The foams showed good thermal resistance and compressive strength, with the foam based on the polyol mixture exhibiting better biodegradability.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Biochemistry & Molecular Biology
Marcin Borowicz, Marek Isbrandt, Joanna Paciorek-Sadowska
Summary: The research aimed to obtain two new eco-polyols based on waste polylactide (PLA) and tested their effects on rigid polyurethane and polyisocyanurate foams. Analysis showed that partial replacement of petrochemical polyol by eco-polyols resulted in better performance in terms of density, compressive strength, brittleness, water absorption, and aging resistance for both RPU/PIR and PRU foams.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Chemistry, Physical
Marcin Borowicz, Marek Isbrandt, Joanna Paciorek-Sadowska, Pawel Sander
Summary: The article compares bio-polyols obtained from white mustard seed oil, which contain boron and sulfur atoms. The synthesis methods involved epoxidation of unsaturated bonds followed by opening of epoxy rings by compounds containing heteroatoms. The synthesized bio-polyols were characterized using various tests, and they were found to be suitable for obtaining polyurethane materials. The presence of sulfur and boron atoms in the bio-polyols reduced the flammability of the polyurethane materials.
Article
Polymer Science
Joanna Paciorek-Sadowska, Marcin Borowicz, Marek Isbrandt
Summary: The management of by-products and waste from agriculture and the agri-food industry is challenging for the plastics industry. Flexible polyurethane foams containing ground corncake from corn oil production were successfully obtained, and the influence of the bio-filler on the physico-mechanical and thermal properties of the synthesized foams was investigated. The results showed that the modified foams had similar or even better properties than the reference sample without bio-filler.
Article
Engineering, Mechanical
Kacper Fiedurek, Pawel Szroeder, Marek Macko, Aneta Raszkowska-Kaczor, Marcin Borowicz, Natalia Puszczykowska
Summary: This study investigates the effect of polylactide (PLA) grain size on the efficiency of the twin-screw extrusion process and flame retardancy properties of composite materials. Experimental results demonstrate that the choice of starting material significantly impacts both extrusion efficiency and flame retardancy.
ACTA MECHANICA ET AUTOMATICA
(2022)
Article
Biochemistry & Molecular Biology
Joanna Paciorek-Sadowska, Marcin Borowicz, Marek Isbrandt
Summary: The use of evening primrose oil cake as a bio-filler significantly influences the morphology of foams, leading to improved physico-mechanical and thermal insulation properties while reducing flammability. Thorough mixing allows better homogenization of the bio-filler in the polyurethane matrix, resulting in a regular cellular structure.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Polymer Science
Joanna Paciorek-Sadowska, Marcin Borowicz, Marek Isbrandt, Lukasz Grzybowski, Boguslaw Czuprynski
Article
Agricultural Engineering
Marcin Borowicz, Joanna Paciorek-Sadowska, Marek Isbrandt
INDUSTRIAL CROPS AND PRODUCTS
(2020)
