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In-situ green synthesis of zinc oxide nanoparticles (ZnO NPs) onto the cotton fabrics by neem (azardirachta indica) leaf extract
No full textThis research work was carried out for the green in-situ synthesis of ZnO nanoparticles onto the 100%
cotton fabric. Zinc nitrate hexahydrate [Zn(NO3)2.6H2O] was used as precursor and the Neem
(Azardirachta Indica) leaf extract was used as reducing agent. Scanning electron microscopy (SEM) and
X ray diffraction (XRD) were done to investigate the surface morphology and characteristics of
developed samples. Moreover the ultraviolet protection factor (UPF), UVA blocking %age, UVB
blocking %age, and antibacterial properties were examined. The SEM and XRD confirmed the
deposition of ZnO NPs onto the fabric having crystalline structure. The evaluated samples showed very
excellent results for, UPF rating, UVA blocking %age, UVB blocking %age, and antibacterial
properties
Centrum Doskonałości Projektowania Uniwersalnego, czyli co nowego w projekcie „Dostępna Politechnika Łódzka” – z dr hab. inż. Grzegorzem Granosikiem, prof. PŁ, Zastępcą Dyrektora Instytutu Automatyki ds. nauki i promocji, Kierownikiem zadania I w projekcie „Dostępna Politechnika Łódzka”
No full textwywiad z dr hab. inż. Grzegorzem Granosikiem, prof. PŁ,
Zastępcą Dyrektora Instytutu Automatyki ds. nauki
i promocji, Kierownikiem zadania I w projekcie
„Dostępna Politechnika Łódzka
Preparation of PVDF nanofibers by optimizing solvent properties: improved solvent viscosity and evaporation rate
No full textPVDF nanofibers have been intensively investigated in wearable energy harvesting because of their
flexibility and piezoelectric properties. In this study, we prepared PVDF nanofibers by the
electrospinning method. Different solvents like DMF and DMF/acetone with the ratio of 6/4, 5/5, and
4/6 were selected to adjust the solvent properties. SEM, FTIR, and DSC characterizations were used to
characterize the morphology, structure, and β phase content of PVDF nanofibers. The results
demonstrate that the electrospun PVDF nanofibers produced by using DMF/acetone have predominantly
a fibre structure and increased β phase compared to electrospun samples using DMF alone as solvent.
PVDF nanofibers fabricated by using DMF/acetone with a ratio of 4/6 exhibit the maximum content of
β phase and the highest value of piezoelectric coefficient (d33)
Predicting air permeability of pile loop knit fabrics using fuzzy logic with type-2 fuzzy inference system
No full textRecent studies have shown that pile loop knit fabrics hold promise for being used in tissue engineering
in addition to their usual application areas (e.g., sportswear). Understanding the air permeability
property of fabrics would be of importance in terms of time and cost when designing new fabrics. This
study develops a Fuzzy Logic (FL) model with type-2 fuzzy inference system for predicting the air
permeability of pile loop knit fabrics. For this purpose, pile loop knit structures with different areal
densities were produced by using textured polyethylene terephthalate (PET) yarns from four different
filament fineness. FL model with type-2 sytem analysis was performed. The root mean square error
(RMSE) of the developed model was compared with those of the Multiple linear regression (MLR), FL
model with type-1 system, and Artificial Neural Network (ANN) model from the previous study. The
RMSE of the MLR, FL model with type-1, and type-2 sytems, and ANN were found to be 14.93, 12.41,
11.58, and 2.42 respectively. Thus, the FL model with type-2 system gave less RMSE in comparison to
the MLR, and FL model with type-1 system. However, the ANN model provided superior performance
over the MLR and FL models in predicting air permeability
Synthesis of mix chitin esters
No full textThe aim of this study was the synthesis of chitin esters, which at a later stage could be used to produce
antibacterial textiles. The esterification of chitin was carried out using butyric anhydride, succinic
anhydride and methanesulfonic acid as a catalyst. The produced products were analysed by FTIR and
NMR techniques and the dynamic apparent viscosity of the spinning solutions was examined. The
products containing butyl and succinic anhydride in molar ratios 95/5 and 85/15 showed the best
properties
Inspirations in Real Analysis: Book of Abstracts: Będlewo, 3-8.04.2022
No full textCover design: Małgorzata Terepeta (own photo)Reproduced from materials supplied by the authorsBanach Center, Institute of Mathematics PAS, Lodz University of Technolog
Development of a plasma activated multifunctional polyester fabric using zinc oxide nanoparticles and citronella oil microcapsules
No full textThere is a high demand for the development of textiles possessing multifunctional properties for
outdoor, protective and health care applications. The coating of polyester (PES) textiles with metal
nanoparticles and essential oils may act in a synergistic mode to obtain materials with improved
antimicrobial and UV-protection properties. However, the lack of functional groups onto PES structure
makes the adhesion of particles a difficult task. In this work, PES fabric was activated by dielectric
barrier discharge (DBD) plasma treatment, and functionalized with zinc oxide nanoparticles (ZnO NPs)
and poly (methyl methacrylate) (PMMA)-citronella microcapsules by dip-coating
Analysis of pressure parameters in orthopedic footwear for people suffering from diabetic foot syndrome
No full textThe paper examines the anthropotechnical design of orthopedic footwear for patients with diabetic foot
syndrome. A 3D distance knitted fabric is used for the shoe insert. For the purpose of the research, a
7 mm thick knitted fabric with transverse elasticity of 76 kPa was designed and produced on a doublebar warp knitting machine. With the use of the FreeMed Professional strain gauge mat, the pressures exerted by the foot on a „bare” walking surface and on the surface equipped with the distance knitted fabric were measured and compared, proving that in the latter case the unit pressure on the patient's foot decreased by 25%. The obtained measurements provide a good starting point for further research on the optimization of loads on the human foot, in case of various lower limbs diseases, including anatomical changes, as well as and in relation to people who are physically overloaded due to working in standing position or being in constant motion
Organizations, creativity and job satisfaction – symbiosis in a portuguese case study
No full textThe number of publications about creativity and innovation is growing once it may help organizations
to grow and be more competitive. In theory the organization is interconnected with the levels of selfperceived
creativity of its employees as well as the satisfaction for creative tasks.
This research aims to study and analyse the perceptions from Portuguese textile and apparel designers.
The objectives of this study where to (i) analyse and summarise the relevant about organizational
connections with employees and their creativity and (ii) to confirm the statistical relation between the
variables, as predicted in the analysed literature in order to contribute to the growth of industrial
knowledge regarding organizational creativity in Portugal.
The developed survey reached 114 replies (n=114) and data was analysed in order to meet the goals
mentioned above.
A symbiosis correlation between Organization Climate and Culture, Designers’ Self-Perceived
Creativity and Job Satisfaction was confirmed with statistical significance