Foaming properties

This study uses chitin as a filler for a polyurethane composite foam. The obtained polymer composite materials (PCM) are examined the technological parameters of the foaming (start time, rise time, and apparent density), the physical-mechanical properties (the compressive stress, compression set, resilience), and the cross-link density.

8p dianmotminh02 03-05-2024 4 2   Download

Part 2 book "Hydrodynamics, mass and heat transfer in chemical engineering" includes content: Mass and heat transfer under complicating factors, hydrodynamics and mass and heat transfer in non Newtonian fluids, foams - structure and some propertie.

172p muasambanhan09 12-03-2024 4 0   Download

In ebook "Polymer reinforcement" we consider this class of polymeric materials but do not consider polymers filled with liquids (e.g., water) and polymeric foams. Filling or reinforcement of polymers to enhance some properties of the material is one of the most important and popular methods of production of plastics, rubbers, coatings, adhesives, etc., which must possess the necessary mechanical and physical properties for any given practical application.

413p loivantrinh 29-10-2023 3 2   Download

Tensoactive species obtained by papain hydrolysis of soy protein were characterized structurally and physicochemically, and their foam-forming and -stabilizing capacity studied. Protein structural changes upon reaction ending were correlated with functional and interfacial properties and with the behaviour thereof with varying hydrolysis degree.

9p viisac 23-09-2023 5 1   Download

In this paper, an approach is proposed and presented to tackle the vibro-acoustic properties of finite clamped composite sandwich plates with foam core. Composite sandwich plates are treated as being orthotropic and the apparent bending stiffnesses are calculated for the two principal directions.

16p viwolverine 11-07-2023 5 2   Download

Due to outstanding properties of mechanical properties, resistance to chemicals, seawater etc., epoxy materials are used effectively in the fields of paints, glues, composites, bulk materials, etc., and in many other specialized sectors such as transportation, aerospace.

4p vifalcon 18-05-2023 7 3   Download

Due to rapid industrialization and modernization, a large number of both fly ash (FA) and ground granulated blast furnace slag (GGBFS), both by-products from thermal power plants and steel factories, are increasing day by day. Thus, recycling these industrial wastes to produce lightweight foamed concrete (LFC) was investigated in this study.

8p viargus 20-02-2023 8 2   Download

Polyurethane foams have good shock-absorbing properties. This article discusses the study of the physical, dynamic analysis, and microstructure of filled polyurethane foams (PUR). We used mineral fillings nanoparticles of titanium dioxide (TiO2 ) and calcium carbonate (C1) to support and strengthen the foam cell structure to develop shock absorption and thermal resistance properties. Dynamic mechanical analysis (DMA) and compression tests compared the mechanic characterization results with different modelling approaches.

25p lyhuyenthu 31-01-2023 6 2   Download

Oromucosal administration is an attractive non-invasive route. However, drug absorption is challenged by salivary flow and the mucosa being a significant permeability barrier. The aim of this study was to design and investigate a multi-layered nanofiber-on-foam-on-film (NFF) drug delivery system with unique properties and based on polysaccharides combined as i) mucoadhesive chitosan-based nanofibers, ii) a peptide loaded hydroxypropyl methylcellulose foam, and iii) a saliva-repelling backing film based on ethylcellulose.

10p vihermione 30-12-2022 42 2   Download

The purpose of this study was to characterize physico-chemical properties (including chemical composition, molecular weight) and functional properties (including oil and water absorption capacities, emulsifying activity and emulsifying stability indexes, foaming ability, rheological properties) of protein concentrate from Lima beans (Phaseolus lunatus) (PPC).

9p visherylsandber 28-06-2022 8 4   Download

This study aims to use FA and GGBFS to replace 50% cement in the production of LFC. Various PP fiber contents were also incorporated to enhance the mechanical strength of LFC. Then, the influence of PP fiber content on the engineering properties of LFC was investigated in terms of fresh unit weight (UW), dry density, water absorption, thermal conductivity, flexural strength, compressive strength, and ultrasonic pulse velocity (UPV).

12p haoasakura 30-05-2022 23 1   Download

The present paper develops a polynomial chaos expansion (PCE)-based surrogate model for characterizing the microstructure-properties relationships of acoustic monodisperse foams. First, the acoustic properties of the considered structures are estimated numerically by homogenization techniques using an idealized periodic unit cell and the Johnson-Champoux-Allard-Pride-Lafarge (JCAPL) model.

14p inception36 30-11-2021 18 1   Download

This study presents the synthesis of glucose-based surfactants including quaternary ammonium salts. Their surface properties and influence on the soil environment were investigated. The synthesized quaternary ammonium chlorides of glucose-based ester exhibited good surface tension reduction properties and formed stable foam in contact with water. The results showed that quaternary ester ammonium salts affect the activation of metals (nickel and cadmium) from the soil matrix after their introduction into the soil environment. This phenomenon can increase the bioavailability of these metals.

15p tudichquannguyet 29-11-2021 4 1   Download

Recently, amount of industrial byproducts such as fly ash and blast furnace slag is increasing due to the human demand and industry development of country. The recycle of these materials in the production of foam concrete is an objective of this study.

9p viwinter2711 18-10-2021 6 0   Download

This paper demonstrates a homogenization approach to characterize the effect of cell size of open-cell foam materials on their acoustic properties such as effective density, effective bulk modulus, and sound absorption. The three-dimensional representative volume element of the local morphology of open-cell foams is first reconstructed.

11p cothumenhmong11 05-05-2021 19 1   Download

The study was carried out for utilization of papaya leaf for preparation of foam mat dried papaya leaf powder. The conversion of papaya leaf juice into foam was optimized by whipping the juice after addition of carboxymethyl-cellulose (CMC) and drying the resultant foam in dehydrator (60±2°C) to constant moisture content.

10p chauchaungayxua10 19-03-2021 9 1   Download

Foam mat drying of papaya pulp was undertaken by foaming of papaya pulp using foaming agent and foaming stabilizer in thin layer drying. Whey protein isolate was used as foaming agent and methyl cellulose was used as foaming stabilizer.

13p chauchaungayxua11 23-03-2021 6 1   Download

Three cutivars of mango viz; Amrapali, Dashehari, Mallika and one seedling mango were evaluated for production of foam mat dried powder. Initially, physico-chemical properties were determined. Mango Pulp of different cultivars was foamed by carboxy -methyl - cellulose (CMC) at different concentrations 0, 1.0 and 2.0% followed by drying in tray drier for preparation of instant mango powder.

19p caygaocaolon6 30-07-2020 15 1   Download

The present research was carried out to study some functional properties of seven local flours (Agbablé3, Bonoua2, Bondoukou4, Boufouh3, Boufouh4, Soclopouopo3, Totoba2) cassava (Manihot esculenta Crantz) varieties. The functional properties (hydrated density, apparent density, porosity, water absorption capacity, oil absorption capacity, hydrophillipophil ratio, water solubility index, emulsion capacity, foam capacity, wettability, gelatinization temperature, blue value index) of were evaluated.

12p nguathienthan5 04-06-2020 10 1   Download

The changes in functional properties viz. solubility, total sulfhydryl groups, Ca2+ ATPase activity, emulsion activity index (EAI), emulsion capacity (EC), viscosity, foam volume stability (FVS), foam volume capacity, gelation, water holding capacity (WHC) of muscle proteins from fresh water fish eel (Mastacembelus armatus) during ice storage was evaluated for a period of 16 days with the analysis of each parameter monitored for every alternate day. The solubility of muscle proteins i.e. MFP decreased from 59.16 to 51.89 mg/g during chill storage.

12p quenchua4 06-04-2020 14 2   Download