Results 31 to 40 of about 2,115 (97)

Polymer Electrolytes for Lithium Batteries : A Review on Types, Characteristics and Challenges [PDF]

open access: yes, 2023
Today, the economic growth of countries depends on the supply of energy resources. In most countries, these resources include coal, oil, natural gas, and nuclear energy.
Elham Aram
core   +1 more source

Effect of Glycerol in Soft and Hard Segments on Properties of Shape Memory Polyurethane [PDF]

open access: yes, 2023
Hypothesis: Chemical cross-linked shape memory polyurethanes (CSMPUs) can have various applications in different fields such as medicine, where mechanical behavior and shape memory are improved in these samples compared to linear shape memory ...
, Peyman Naghavi Ilkhichi   +3 more
core   +1 more source

مروری بر شکل‌شناسی، خواص گرمایی، مکانیکی و الکتریکی نانوکامپوزیت‌های پلی(‌آکریلونیتریل-بوتادی‌ان-استیرن) و نانولوله‌های کربنی [PDF]

open access: yesBaspārish, 2018
در دو دهه اخیر، مطالعات گسترده‌ای در باره تهیه نانوکامپوزیت‌های پلیمری دارای نانولوله‌های کربنی (CNTs) انجام گرفته است. نتایج به‌دست آمده حاکی از آن است که افزودن مقدار کمی CNTs، موجب افزایش رسانندگی، پایداری گرمایی، بازدارندگی شعله، مدول یانگ، مقاومت به
زهرا سهیل پور   +2 more
doaj   +1 more source

Poly(lactic acid)/Polycaprolactone/Graphene Bionanocomposites: Microstructural, Mechanical and Thermal Properties [PDF]

open access: yes, 2022
Hypothesis: Among the types of bioplastics, poly(lactic acid) (PLA) has the ability to compete with petroleum-based polymers due to its favorable properties such as high tensile strength and high modulus of elasticity.
Hogatallah Ziyaei   +2 more
core   +1 more source

Electron Transporting Materials Based on n-Type Polymers in Inverted Perovskite Solar Cells: A Review [PDF]

open access: yes, 2023
Perovskite solar cells (PSCs), despite the stability challenges they face, have made significant progress. It is predicted that this trend will continue due to the progress in composite engineering and the materials that make up the layers.
Atieh Feda   +2 more
core   +1 more source

اهمیت و جایگاه پژوهش های نظری در علوم و مهندسی پلیمر [PDF]

open access: yesBaspārish, 2012
صنایع و محصولات پلیمری در سده گذشته نقش بسیار قابل توجهی در پیش رفت زندگی بشر داشته است. در ابتدا، تولید فراورده های پلیمری صرفا بر مبنای مشاهدات آزمایشگاهی و صنعتی بود و هر گونه ابداع و نوآوری بر اساس تجربیات قبلی و آزمون های حدس و تکرار انجام می شد. با
مجید غیاث
doaj   +1 more source

Conductive Nanofibrous Scaffolds Based on Tragacanth Gum, Polyaniline, and Poly(vinyl alcohol): Fabrication, Characterization and Exploring Their Potential Application in Skin Tissue Engineering [PDF]

open access: yes, 2023
Hypothesis: The skin is the largest organ and outer covering of the body, which acts as a barrier against microbial invasions as well as mechanical and chemical damage. But, sometimes the skin does not have the ability to regenerate the tissue on its own.
Bakhshali Massoumi   +2 more
core   +1 more source

مروری بر ویژگی‌ها و کاربردهای اتیل سلولوز [PDF]

open access: yes, 2023
سلولوز، ترکیب اصلی تشکیل ­دهنده بیشتر گیاهان است. تجدیدپذیری این ماده موجب تبدیل سلولوز به ماده­ خام طبیعی شده که به فراوانی دردسترس است و بابت اتمام منابع آن نگرانی وجود نداشته باشد.
احسان عالی خانی   +2 more
core   +1 more source

Surface Modification of Polyethersulfone-Based Nanofiltration Membrane Using Carboxylated Graphene Oxide and Polyethyleneimine [PDF]

open access: yes, 2022
Hypothesis: Carbxylated graghene oxide nanosheets were synthesized and the nanosheets were applied to the surface modification of the polyethersulfonebased nanofiltration membranes for water treatment.Methods: Different concentrations of the synthesized ...
Abdolreza Moghadassi   +2 more
core   +1 more source

Dependence of Dielectric Constant and Mechanical Properties of Expanded Polystyrene Foam on Cell Wall Thickness [PDF]

open access: yes, 2023
Hypothesis: The technology of preparing materials with desired dielectric constants is used in designing and manufacturing telecommunication equipment.
Milad Saadat Tagharoodi   +5 more
core   +1 more source

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