List of Articles Hamidreza Haydari

• Open Access Article
  • Abstract Page
  • Full-Text
  
  1 - The studying on mechanism, properties and application of shape memory polymers
  Hamidreza Haydari
  Shape memory polymers (SMPs) represent a highly special class of materials. As one representative of the intelligent polymeric systems, these materials gained significant interest in recent years. SMPs are stimuli-responsive polymers, which act as stimulants like light, More

  Shape memory polymers (SMPs) represent a highly special class of materials. As one representative of the intelligent polymeric systems, these materials gained significant interest in recent years. SMPs are stimuli-responsive polymers, which act as stimulants like light, temperature, PH changes, solvent changes, electrical fields or magnetic fields, and their output is strain. Also, these polymers are highly regarded as essential for fundamental research and technological innovation. The present review will provide a short overview with particular attention to structure, mechanisms and applications of SMPs, shape memory effects and, as well as the current developments and concepts for shape memory polymers. The applications of shape memory polymers can be noted in medical industries, commercial industries, S hape memory polymers (SMPs) represent a highly special class of materials. As one representative of the intelligent polymeric systems, these materials gained significant interest in recent years. SMPs are stimuli-responsive polymers, which act as stimulants like light, temperature, PH changes, solvent changes, electrical fields or magnetic fields, and their output is strain. Also, these polymers are highly regarded as essential for fundamental research and technological innovation. The present review will provide a short overview with particular attention to structure, mechanisms and applications of SMPs, shape memory effects and, as well as the current developments and concepts for shape memory polymers. The applications of shape memory polymers can be noted in medical industries, commercial industries, aerospace industries, self-healing polymers, etc. aerospace industries, self-healing polymers, etc. Manuscript profile
• Open Access Article
  • Abstract Page
  • Full-Text
  
  2 - Shape memory polymers: Structure, mechanism, functionality, and applications
  Hamidreza Haydari Marziyeh Hosseini
  In the last three decades, many researches have been conducted in the field of shape memory polymers, and in the past few years, the interest in research in this field has received a lot of attention. In this study, a comprehensive and complete review of the structure, More

  In the last three decades, many researches have been conducted in the field of shape memory polymers, and in the past few years, the interest in research in this field has received a lot of attention. In this study, a comprehensive and complete review of the structure, mechanism, model and applications of this category of polymers has been done. In general, the mechanisms of shape memory polymers are divided into three groups: direct thermal induction, indirect thermal induction, and optical induction, and each has its own switch unit that controls the shape structure. These switches have amorphous and semi-crystalline phase, which are defined in two phase and molecular levels. Also, increasing the mechanical properties, including the strength and toughness of shape memory polymers, is of great importance, which can increase their efficiency. Shape memory polymers can be used in medical, aerospace, textile and other industries. In the textile industry, the electrospinning process is used as a simple and efficient method for the preparation of shape memory polymer fibers and the development of their structure, and the mechanism and method of preparation of these fibers will be investigated. In the last three decades, many researches have been conducted in the field of shape memory polymers, and in the past few years, the interest in research in this field has received a lot of attention. In this study, a comprehensive and complete review of the structure, mechanism, model and applications of this category of polymers has been done. Manuscript profile
• Open Access Article
  • Abstract Page
  • Full-Text
  
  3 - Investigating the properties and application of various types of adhesives used in the body
  Hamidreza Haydari marziyeh hosseini
  Nowadays, in order to treat and repair bone fractures, metal screws and plates are used; But normally, this method will cause problems in surgeries and bone fractures, including skull and vertebral column fractures, which for example can include things such as long oper More

  Nowadays, in order to treat and repair bone fractures, metal screws and plates are used; But normally, this method will cause problems in surgeries and bone fractures, including skull and vertebral column fractures, which for example can include things such as long operation time which increases the surgery time, the possibility of damage to the bone tissues around the fracture, difficulty and failure. He pointed out the plates. Therefore, researchers and orthopedic surgeons are looking for a suitable alternative to this method. The use of bone glues is one of the new technologies in this direction that has been proposed to solve such problems. These adhesives must have characteristics such as acceptable adhesion of proteins, tissues and bone, especially in the presence of fat around the bone and stability of adhesion in these environments, and over time, have high mechanical strength against tensile, shear and compressive stresses. Also, having characteristics such as non-toxicity, biocompatibility, appropriate biodegradability, quick and easy application, and good fracture stabilization are required for these adhesives. In this article, some of these bio-adhesives, how to prepare and use them are discussed. Nowadays, in order to treat and repair bone fractures, metal screws and plates are used; But normally, this method will cause problems in surgeries and bone fractures, including skull and vertebral column fractures, which for example can include things such as long operation time which increases the surgery time, the possibility of damage to the bone tissues around the fracture, difficulty and failure. Manuscript profile