ﺑﺮرﺳﻲ اﺛﺮ ﺑﺮﺧﻲ از ﺷﺮاﻳﻂ رﻧﮕﺮزی ﺑﺮ اﻓﺰاﻳﺶ ﻋﻤﻖ رﻧﮓ در ﭘﺎ

ﺑﺮرﺳﻲ اﺛﺮ ﺑﺮﺧﻲ از ﺷﺮاﻳﻂ رﻧﮕﺮزی ﺑﺮ اﻓﺰاﻳﺶ ﻋﻤﻖ رﻧﮓ در ﭘﺎرﭼﻪ ﻫﺎی ﻛﺮپ ﭘﻠﻲاﺳﺘﺮ
1ﭘﺮواﻧﻪ ﺣﻴﺪری،ﻣﻬﺪی ﻧﻮری ، ﻋﺬرا ﻏﻤﮕﺴﺎر

ﭼﻜﻴﺪه
ﭘﺎرﭼﻪﻫﺎی ﻛﺮپ ﭘﻠﻲاﺳﺘﺮی اﻣﺮوزه ﻣﺼﺮف زﻳﺎدی در ﺗﻬﻴﻪ ﭘﻮﺷﺎک دارﻧﺪ. رﻧﮕﺮزی اﻳﻦ ﭘﺎرﭼﻪﻫﺎ ﺑﺎ ﻋﻤﻖ زﻳﺎد ﺑﺨﺼﻮص در ﺗﻮﻟﻴﺪ ﭘﺎﭼﻪﻫﺎی ﻣﺸﻜﻲ ﻣﻮرد ﻣﺼﺮف در ﭼﺎدر ﺑﺎﻧﻮان از اﻫﻤﻴﺖ ﺑﺎﻻﺋﻲ ﺑﺮﺧﻮردار اﺳﺖ. در اﻳﻦ ﺗﺤﻘﻴﻖ ﺑﺮﺧﻲ از ﻋﻮاﻣﻞ ﻣﺆﺛﺮ ﺑﺮ اﻓﺰاﻳﺶ ﻋﻤﻖ رﻧﮓ در رﻧﮕﺮزی ﭘﺎرﭼﻪ ﻛﺮپ ﭘﻠﻲاﺳﺘﺮ ﻣﻮرد ﺑﺮرﺳﻲ ﻗﺮار ﮔﺮﻓﺘﻪ اﺳﺖ . اﺑﺘﺪا رﻧﮕﺮزی ﺗﺤﺖ ﺷﺮا ﻳﻂ ﻣﺘﻔﺎوت اﻧﺠﺎم ﺷﺪه اﺳﺖ و ﺳﭙﺲ ﺑﻌﺪ از اﻧﺠﺎم رﻧﮕﺮزی اﺛﺮ ﻧﻮع رﻧﮕﺰا ﺑﺮ ﻋﻤﻖ رﻧﮓ و ﺗﻪ رﻧﮓ ﭘﺎرﭼﻪ ﻫﺎی رﻧﮕﺮزی ﺷﺪه از ﻃﺮﻳﻖ اﺳﭙﻜﺘﺮوﻓﺘﻮﻣﺘﺮی و ﺗﻌﻴﻴﻦ ﻣﺸﺨﺼﺎت رﻧﮕﻲ ﻧﻤﻮﻧﻪ ﻫﺎ ﻣﻄﺎﻟﻌﻪ ﺷﺪه اﺳﺖ ﻧﺘﺎﻳﺞ ﺧﻼﺻﻪ ﺷﺪه ای از درﺻﺪ ﺗﺄﺛﻴﺮ ﻧﻮع رﻧﮕﺰا و درﺻﺪ رﻧﮕﺰا اراﺋﻪ ﺷﺪه اﺳﺖ ﺑﻪ. ﻃﻮر ﻛﻠﻲ اﺳﺘﻔﺎده از درﺻﺪ ﺑﺎﻻی رﻧﮕﺰا ﺗﺄﺛﻴﺮ ی ﺑﻪ ﻣﻴﺰان 5-2 % ﺑﺮ ﻋﻤﻖ رﻧﮓ دارد. ﺗﺄﺛﻴﺮ اﺳﺘﻔﺎده از زﻣﺎن زﻳﺎد رﻧﮕﺮزی، اﺳﺘﻔﺎده ار ﻛﺮﻳﺮو درﺻﺪ ﺑﺎﻻی رﻧﮕﺰا 2 ﻧﺎ 5 و % PHرﻧﮕﺮزی ﻛﻤﺘﺮ از 1% ﺑﺮ ﻋﻤﻖ رﻧﮓ ﻣﻲ ﺑﺎﺷﺪ.
واژهﻫﺎی ﻛﻠﻴﺪی : ﭘﺎرﭼﻪ ﻛﺮپ، ﭘﻠﻲ اﺳﺘﺮ، رﻧﮕﺮزی، رﻧﮓ دﻳﺴﭙﺮس، ﻋﻤﻖ رﻧﮓ .

A Study on New Methods of Chemical Relaxation in Weft Knitted Fa

A Study on New Methods of Chemical Relaxation in Weft Knitted Fabrics
Parisa Chegoonian,Dariush Semnani

 , Department of Textile Engineering, Isfahan University of Technology, Isfahan, 84156-83111, Iran

Abstract
In the present research, new methods of chemical relaxation have been studied for plain and rib weft knitted fabrics. Previous theoretical models presented maximum relaxation of weft knitted fabrics up to their stitch
density amount of 26.7 stitch/cm2
.Also previous relaxation methods of dry, wet, and chemical, mechanical and ultrasonic had processed fabrics up to 23.5 (stitch/cm2
). In this research various methods of chemical relaxations by using detergents, softeners, castification of 17% and 12% alkaline batches were compared with previous methods. Present research showed that chemical relaxation of fabric samples of cotton and blended fabrics could
be processed up to range of 26.2 to 26.6 (stitch/cm2
) by using cationic detergents. Also no damage on
yarns was occurred in using this detergent. on of 17% and 12% alkaline batches were compared with
previous methods. Present research showed that chemical relaxation of fabric samples of cotton and
blended fabrics could be processed up to range of 26.2 to 26.6 (stitch/cm2) by using cationic detergents. Also no damage on yarns was occurred in using this detergent.

The Effect of Moisture on Physical Properties and Adhesion of Ny

The Effect of Moisture on Physical Properties and Adhesion of Nylon 6, 66 Cord- RFL- rubber System
Soghra Ramazani

Abstract
Today Nylon 6, 66 cords generally used for reinforcing rubber compounds. To increase interfacial adhesion of cords to rubber they are coated by an adhesive. Many factors are known to affect the bond strength secured with RFL adhesives. In this study participation of moisture on physical properties (strength and elongation at maximum load) and dipped cord adhesion of Nylon 6 and 66 to rubber were studied. The results of this study showed that moisture exposure of nylon 6, 66 dipped tire cords reduces adhesion due to degradation effect of moisture on Isocyanate groups and impairs its curing with the solid rubber compound. Strength and elongation at maximum load was found to decrease and increase respectively due to moisture absorption, since moisture causes hydrolytic degradation of nylon 6, 66 molecular chains and have plasticizing effect. This mechanism also explains the effectiveness of drying treatment on adhesion and strength. Keywords: H-adhesion, Cord to rubber adhesion, RFL, Moisture, Physical properties

Wool Textile Fibres Coated by Titanium Dioxide Film: Synthesis,

Wool Textile Fibres Coated by Titanium Dioxide Film: Synthesis, Characterization and Prolonged Self Cleaning Properties
Abdollah Fallah Shojaee, Ali Shams Nateri,and Hadi Fallah Moafi

Abstract

 The photocatalytic activity of titanium dioxide -coated wool fibers was investigated through the self-cleaning of methylene blue (MB). It was shown that titanium dioxide species could be produced at temperatures of 100 C by using a sol gel method with
acceptable photo-activity on polymeric materials. The original and treated samples have been characterized by several techniques such as scanning electron microscope, energy dispersive spectroscopic, fourier transform infrared spectroscopy, diffuse reflectance
spectroscopy and x-ray diffraction. The titanium dioxide microparticles, have been found to form a homogeneous thin film on the fibre surface, which shows efficient photocatalytic properties when exposed to ultraviolet light. These films show high photodecomposition
efficiency and the supporting material is stable under prolonged illumination. The photocatalytic activity, tested by measuring the degradation of adsorbed methylene blue
(MB) is maintained upon several numbers of washing. The titanium dioxide covered wool fibres show high efficiency in MB photodegradation, so suggesting high photocatalytic self cleaning properties under uv-vis light. The fibre structure is not altered upon light exposure. This preparation technique can be also applied to new fabrics to create self-cleaning and uv
irradiation protection properties in them.

 Keywords: Wool, Titanium dioxide, Sol gel, Photocatalysis, Self cleaning

Oxidation Bleaching of Antimicrobial Functionalized Cotton Fabri

Oxidation Bleaching of Antimicrobial Functionalized Cotton Fabrics Containing silver Nanoparticles
, S.H. Hekmati-moghaddam, S.M. Bidoki, S. Jafari,F. Mehrpouya1

Abstract
In this study, cotton fabric was successfully modified to have an antibacterial property through use of silver nanoparticles. The antibacterial effects of the treated cotton fabric against Staphylococcus aureus and Pseudomonas aerogenes were examined and found to be excellent. Nano-silver suspensions are mostly colorful having unpleasant colors such as brown or deep yellow. Treating textiles with these nano-silver suspensions can change their appearance and color coordinates which restricts application of these materials on textiles of all variety of colors and especially on white textiles. Thus, Normal oxidizing bleaching of textiles can be used in order to alleviate the unpleasant color change of textiles following the nano-silver anti-bacterial finishing treatments. Hydrogen peroxide can easily destroy most of colorful impurities brought on the textile from nano-silver suspensions.
 Keywords: Oxidation Bleaching, Antimicrobial, Cotton Fabric, Silver Nanoparticles

ﻣﺮوری ﺑﺮ ﺗﻜﻨﻴﻚﻫﺎی رﻧﮕﺮزی اﻟﻴﺎف ﭘﻠﻲﭘﺮوﭘﻴﻠﻦ

ﻣﺮوری ﺑﺮ ﺗﻜﻨﻴﻚﻫﺎی رﻧﮕﺮزی اﻟﻴﺎف ﭘﻠﻲﭘﺮوﭘﻴﻠﻦ
 اوراﻧﻮس ﮔﻮدرزی ، ﺑﻬﻨﺎز ﻧﺼﻴﺮی، ﺟﻮاد ﻣﺨﺘﺎری

ﭼﻜﻴﺪه:
اﻟﻴﺎف ﭘﻠﻲﭘﺮوﭘﻴﻠﻦ ﺑﻪ ﻋﻠﺖ وزن ﻣﺨﺼﻮص ﻛﻢ، ﺟﺬب آب ﻣﺤﺪود، ﻣﻘﺎوﻣﺖ ﺷﻴﻤﻴﺎﻳﻲ زﻳﺎد و ﻫﻤﭽﻨﻴﻦ ﻗﻴﻤﺖ ﻛﻢ ، ﺑﺎ وﺟﻮد ﻗﺎﺑﻠﻴﺖ رﻧﮕﭙﺬﻳﺮی ﺟﺰﺋﻲ ﻛﺎرﺑﺮدﻫﺎی ﻓﺮاواﻧﻲ دارﻧﺪ . اﺻﻼح ﻓﻴﺰﻳﻜﻲ و ﺷﻴﻤﻴﺎﻳﻲ ﭘﻠﻲ ﭘﺮوﭘﻴﻠﻦ ﺳﺒﺐ ﺑﻬﺒﻮد رﻧﮕﭙﺬﻳﺮی اﻳﻦ ﺎﻟﻴا ف ﻣﻲﮔﺮدد . اﺻﻼح ﺑﻮﺳﻴﻠﻪ ﻳﻜﻲ از روشﻫﺎی واردﺳﺎزی ﮔﺮوهﻫﺎی ﻗﻄﺒﻲ (ﻛﻮﭘﻠﻴﻤﺮﻳﺰاﺳﻴﻮن ﭘﻴﻮﻧﺪی، اﻓﺰودﻧﻲﻫﺎی ﭘﻠﻴﻤﺮی و اﻛﺴﻴﺪ ﻛﺮدن)، ﭘﻠﻴﻤﺮﻫﺎی ﻓﻮقﺷﺎﺧﻪای و در ﻧﻬﺎﻳﺖ ﺑﺎ روش ﻧﺎﻧﻮﺗﻜﻨﻮﻟﻮژی اﻧﺠﺎم ﻣﻲﭘﺬﻳﺮد .در ﻣﻴﺎن روشﻫﺎی ﻧﺎﻣﺒﺮده، ﺗﺤﻘﻴﻘﺎت اﻧﺠﺎم ﺷﺪه ﺑﻪ روش ﻛﻮﭘﻠﻴﻤﺮﻳﺰاﺳﻴﻮن ﭘﻴﻮﻧﺪی، ﺑﻪ اﻓﺰاﻳﺶ ﻗﺎﺑﻠﻴﺖ ﺟﺬب آب اﻳﻦ اﻟﻴﺎف اﺧﺘﺼﺎص داﺷﺖ. اﻛﺴﻴﺪﻛﺮدن ﺑﻪ ﻋﻨﻮان ﻳﻜﻲ از ﻛﺎرﺑﺮدﻳﺘﺮﻳﻦ روشﻫﺎی ﻣﻮﺟﻮد ﺟﻬﺖ اﺻﻼح ﻗﺎﺑﻠﻴﺖ رﻧﮕﭙﺬﻳﺮی ﭘﻠﻲﭘﺮوﭘﻴﻠﻦﻣﻌﺮﻓﻲ ﺷﺪ. ﻧﺘﺎﻳﺞ ﻧﺸﺎن داد ﻛﻪ اﺗﺼﺎل ﭘﻠﻴﻤﺮﻫﺎی ﻓﻮقﺷﺎﺧﻪای ﺑﻪ ﭘﻠﻲﭘﺮوﭘﻴﻠﻦ ﺳﺒﺐ ﺑﺎﻻﺑﺮدن ﻣﻴﻞ ﺟﺬﺑﻲ و در ﻧﺘﻴﺠﻪ اﻓﺰاﻳﺶ در ﺑﺮداﺷﺖ رﻧﮕﻲ ﺗﻮﺳﻂ ﻟﻴﻒ ﻣﻲ .ﺷﻮد روش ﻧﺎﻧﻮﺗﻜﻨﻮﻟﻮژی ﺑﻪ ﻋﻨﻮان روﺷﻲ ﻧﻮﻳﻦ در ﻣﻴﺎن ﺗﻜﻨﻴﻚﻫﺎی ﻧﺎﻣﺒﺮده ﻋﻼوه ﺑﺮ ﺑﻬﺒﻮد ﺳﺎﺧﺘﺎری ﭘﻠﻴﻤﺮ و ﭘﺎﻳﺪاری ﺣﺮارﺗﻲ و ﺷﻴﻤﻴﺎﻳﻲ، ﺳﺒﺐ ﺑﻬﺒﻮد در ﺧﺼﻮﺻﻴﺎت ﻣﻜﺎﻧﻴﻜﻲ و ﺗﻤﺎﻳﻞ ذاﺗﻲ ﻧﺎﻧﻮﻛﺎﻣﭙﻮزﻳﺖﻫﺎ ﺑﻪ رﻧﮕﺰا ﻣﻲﮔﺮدد
واژهﻫﺎی ﻛﻠﻴﺪی: ﻗﺎﺑﻠﻴﺖ رﻧﮕﭙﺬﻳﺮی، ﭘﻠﻲﭘﺮوﭘﻴﻠﻦ، اﺻﻼح ﻓﻴﺰﻳﻜﻲ و ﺷﻴﻤﻴﺎﻳﻲ

ﻣﺮﻭﺭﯼ ﺑﺮﺭﻧﮕﺰﺍﻫﺎﻱ ﺯﻳﺴﺖ ﻃﺒﯽ ﻭ ﮐﺎﺭﺑﺮﺩ ﺁﻧﻬﺎ

ﻣﺮﻭﺭﯼ ﺑﺮﺭﻧﮕﺰﺍﻫﺎﻱ ﺯﻳﺴﺖ ﻃﺒﯽ ﻭ ﮐﺎﺭﺑﺮﺩ ﺁﻧﻬﺎ
ﺟﻮﺍﺩ ﻣﺨﺘﺎﺭﯼ ،ﻣﺤﻤﻮﺩ ﺻﺎﺑﺮﯼ ﻣﻄﻠﻖ،ﮐﻤﺎﻝ ﺍﻟﺪﻳﻦ ﻗﺮﻧﺠﻴﮓ

ﭼﻜﻴﺪه
در ﺳﺎل ﻫﺎی اﺧﻴﺮ روش ﻫﺎی ﻧﻮﻳﻨﻲ در ﺗﺸﺨﻴﺺ ﻫﺎی ﭘﺰﺷﻜﻲ ﺑﺮ ﭘﺎﻳﻪ ﺧﻮاص رﻧﮕﺰاﻫﺎی ﻓﻠﻮرﺳﻨﺖ اﺑﺪاع ﺷﺪه اﺳﺖ. اﺻﻮل ﻛﻠﻲ اﻳﻦ روش ﻫﺎ ﺑﺮ اﺳﺎس اﻧﺪازه ﮔﻴﺮی ﺗﻐﻴﻴﺮات ﻓﻠﻮرﺳﺎﻧﺴﻲ اﻳﻦ رﻧﮕﺰاﻫﺎ در اﺛﺮ ﺗﺮﻛﻴﺐ ﺑﺎ ﻣﻮاد ﻣﺨﺘﻠﻒ ﻗﺮار دارد. ﻣﻬﻤﺘﺮﻳﻦ و ﭘﺮ ﻛﺎرﺑﺮدﺗﺮﻳﻦ رﻧﮕﺰاﻫﺎی ﻓﻠﻮرﺳﻨﺖ در ﺗﺸﺨﻴﺺ ﻫﺎی ﭘﺰﺷﻜﻲ ﻋﺒﺎرﺗﻨﺪ از رﻧﮕﺰاﻫﺎی ﺳﻴﺎﻧﻴﻨﻲ، اﺳﻜﻮارﻳﻦ ﻫﺎ، ﻛﻮﻣﺎرﻳﻦ ﻫﺎ، روداﻣﻴﻦ ﻫﺎ و ﭘﻴﺮن ﻫﺎ. ﺑﺮای اﻧﺪازه ﮔﻴﺮی ﺗﻐﻴﻴﺮات ﻓﻠﻮرﺳﺎﻧﺴﻲ اﻳﻦ رﻧﮕﺰاﻫﺎ از دﺳﺘﮕﺎه ﻫﺎی ﻃﻴﻒ ﺳﻨﺠﻲ ﻓﻠﻮرﺳﺎﻧﺲ اﺳﺘﻔﺎده ﻣﻲ ﮔﺮدد، ﺗﺸﺨﻴﺺ آﻧﻴﻮن ﻫﺎ و ﻛﺎﺗﻴﻮن ﻫﺎی ﻣﻮﺟﻮد در ﺳﻠﻮل ﻫﺎ، ﺗﻌﻴﻴﻦ ﻣﻴﺰان pH در ﺳﻠﻮل ﻫﺎ و ﻫﻤﭽﻨﻴﻦ ﺗﺸﺨﻴﺺ ﺳﻠﻮل ﻫﺎی ﺳﺮﻃﺎﻧﻲ از ﺟﻤﻠﻪ ﻣﻮارد ﻛﺎرﺑﺮد اﻳﻦ رﻧﮕﺰاﻫﺎ ﻣﻲ ﺑﺎﺷﺪ.
واژهﻫﺎی ﻛﻠﻴﺪی: ﺭﻧﮕﺰﺍﻱ ﺯﻳﺴﺖ ﻃﺒﻲ، ﺭﻧﮕﺰﺍﻱ ﻓﻠﻮﺭﺳﻨﺖ، ﻃﻴﻒ ﺳﻨﺠﻲ ﻓﻠﻮﺭﺳﺎﻧﺲ، ﻧﺸﺮ ﻓﻠﻮﺭﺳﺎﻧﺲ

ﻄﺎﻟﻌﻪ روﺷﻬﺎی ﻣﺨﺘﻠﻒ اﺳﺘﺨﺮاج ﻣﺎده رﻧﮕﺰا از رﻳﺸﻪ ﮔﻴﺎه روﻧ

ﻣﻄﺎﻟﻌﻪ روﺷﻬﺎی ﻣﺨﺘﻠﻒ اﺳﺘﺨﺮاج ﻣﺎده رﻧﮕﺰا از رﻳﺸﻪ ﮔﻴﺎه روﻧﺎس و ارزﻳﺎﺑﻲ
ﻓﺎﻛﺘﻮرﻫﺎی ﻣﻮﺛﺮ ﺑﺮ راﻧﺪﻣﺎن ﻓﺮاﻳﻨﺪ اﺳﺘﺨﺮاج
 ﺳﻌﻴﺪه روﺷﻨﻌﻠﻲ،ﺳﻴﺪ ﻣﻨﺼﻮر ﺑﻴﺪﻛﻲ ،ﻣﺤﻤﺪ ﺧﻮاﺟﻪ ﻣﻬﺮﻳﺰی، ﻣﻬﺴﺎ ﻋﻠﻴﺠﺎﻧﻲ ،ﻣﻠﻴﺤﻪﺣﺴﻴﻦ زاده

مقدﻣﻪ
رﻧﮓ ﻫﺎی ﻃﺒﻴﻌﻲ ﻗﺪﻳﻤﻲ ﺗﺮﻳﻦ رﻧﮓ ﻫﺎﻳﻲ ﻫﺴﺘﻨﺪ ﻛﻪ ﺑﺸﺮ آن ﻫﺎ را ﺷﻨﺎﺧﺘﻪ و از آﻧﻬﺎ اﺳﺘﻔﺎده ﻧﻤﻮده اﺳﺖ. اﺳﺘﻔﺎده از اﻳﻦرﻧﮕﺰاﻫﺎ در رﻧﮕﺮزی ﭘﺎرﭼﻪ و اﻟﻴﺎف از ﻗﺪﻳﻢ ﻣﻮرد ﺗﻮﺟﻪ ﺑﻮده اﺳﺖ. اﻳﻦ رﻧﮓ ﻫﺎ ﺑﺪون اﺳﺘﻔﺎده از ﻓﺮاﻳﻨﺪ ﺷﻴﻤﻴﺎﻳﻲ ﺗﻬﻴﻪ ﺷﺪه و اﻏﻠﺐ ﻣﻨﺎﺑﻊ ﮔﻴﺎﻫﻲ و ﺣﻴﻮاﻧﻲ دارﻧﺪ. اﻣﺎ ﺑﻪ ﻋﻠﺖ ﻫﺰﻳﻨﻪ ﻫﺎی ﮔﺰاف و ﺻﺮف وﻗﺖ و ﻧﻴﺮوی زﻳﺎد ﺑﺮای ﺗﻬﻴﻪ و آﻣﺎده ﺳﺎزی اﻳﻦ رﻧﮕﺰاﻫﺎ، اﺳﺘﻔﺎده از آن ﻫﺎ در ﺻﻨﻌﺖ ﻛﻢ ﺷﺪه اﺳﺖ و اﻣﺮوزه ﺑﻴﺸﺘﺮ در زﻣﻴﻨﻪ ﻫﺎی ﺳﻨﺘﻲ و ﻫﻨﺮی ﻣﻮرد اﺳﺘﻔﺎده ﻗﺮار ﻣﻲ ﮔﻴﺮﻧﺪ[1] .رﻧﮓ رﻳﺸﻪ ﮔﻴﺎه روﻧﺎس ( ﻃﻼی ﺳﺮخ ) ﻳﻜﻲ از ﺑﺮﺟﺴﺘﻪ ﺗﺮﻳﻦ و ﭘﺮ اﺳﺘﻔﺎده ﺗﺮﻳﻦ رﻧﮓ در ﻓﺮش اﺳﺖ اﻳﻦ ﮔﻴﺎه در ﺑﺴﻴﺎری ازﻧﻘﺎط اﻳﺮان ﻣﻲ روﻳﺪ. از رﻧﮓ رﻳﺸﻪ روﻧﺎس در رﻧﮓ آﻣﻴﺰی ﭘﺎرﭼﻪ و اﻟﻴﺎف وﺣﺘﻲ ﻣﻮاد ﻏﺬاﻳﻲ ﻧﻴﺰ اﺳﺘﻔﺎده ﻣﻲ .ﺷﻮدروﻧﺎس ﮔﻴﺎﻫﻲ اﺳﺖ ﻋﻠﻔﻲ، ﺑﺎ ﺷﺎﺧﻪ ﻫﺎی ﺑﺎرﻳﻚ و ﻧﺎزک ﻛﻪ ﺑﻪ ﺷﻮری ﺑﺴﻴﺎر ﻣﻘﺎوم اﺳﺖ و در ﻓﺼﻞ ﺑﻬﺎر ﻣﻲ روﻳﺪ . ﻗﺪرت رﻧﮕﻲ رﻳﺸﻪ روﻧﺎس ﺑﺎ ﻣﺪت زﻣﺎﻧﻲ ﻛﻪ در ﺧﺎک ﻣﻲ ﻣﺎﻧﺪ ﻧﺴﺒﺖ ﻣﺴﺘﻘﻴﻢ دارد و رﻧﮓ اﺳﺘﺨﺮاج ﺷﺪه از رﻳﺸﻪ ﮔﻴﺎﻫﻲ ﻛﻪ ﻣﺪت ﺑﻴﺸﺘﺮی در ﺧﺎک ﻣﺎﻧﺪه، ﺑﻴﺸﺘﺮ اﺳﺖ[2] .ﻣﺎده رﻧﮕﺰای اﻳﻦ ﮔﻴﺎه در رﻳﺸﻪ آن و ﺑﻴﻦ ﭘﻮﺳﺖ ﺧﺎرﺟﻲ و ﺳﺎﻗﻪ ﻣﻴﺎﻧﻲ ﮔﻴﺎه اﺳﺖ ﻛﻪ ﺷﺎﻣﻞ ﭼﻨﺪ ﺗﺮﻛﻴﺐ رﻧﮕﻲ از ﺟﻤﻠﻪ :روﺑﻴﺎدﻳﻦ، ﮔﻠﻮﻛﻮزی روﺑﻴﺎدﻳﻦ، ﭘﻮرﭘﻮرﻳﻦ، ﮔﻠﻮﻛﻮزﻳﺪ ﭘﻮرﭘﻮرﻳﻦ، اﺳﻴﺪ روﺑﺮﻳﺘﺮﻳﻚ و آﻟﻴﺰارﻳﻦ ﻣﻲ ﺑﺎﺷﺪ[3] . ﻣﻬﻤﺘﺮﻳﻦ ﻣﺎده رﻧﮕﺰا در اﻳﻦ ﮔﻴﺎه، آﻟﻴﺰارﻳﻦ اﺳﺖ . زادﮔﺎه و ﭘﻴﺪاﻳﺶ اﻳﻦ ﮔﻴﺎه از ﺧﺎورﻣﻴﺎﻧﻪ ﻣﻲ ﺑﺎﺷﺪ وﻟﻲ از ﮔﺬﺷﺘﻪ ﻫﺎی دور در ﺑﻴﺸﺘﺮ ﭘﻬﻨﻪ ﻫﺎی ﺟﻬﺎن ﻛﺸﺖ ﻣﻲ ﺷﺪه اﺳﺖ. از دﻳﺮ ﺑﺎز در ﺑﻴﺸﺘﺮ ﻗﺴﻤﺘﻬﺎی اﻳﺮان از ﺟﻤﻠﻪ ﺗﺒﺮﻳﺰ، اروﻣﻴﻪ، اراک، ﻓﺎرس، ﻳﺰد، ﻛﺮﻣﺎن، اﺻﻔﻬﺎن و ﺑﻠﻮﭼﺴﺘﺎن ﻛﺸﺖ ﻣﻲ ﺷﺪه اﺳﺖ [1]. روﻧﺎس در اﻛﺜﺮ ﺟﺎﻫﺎی اﻳﺮان ﺑﺼﻮرت ﺧﻮدرو و وﺣﺸﻲ ﻣﻲ روﻳﺪ، در ﺣﺎل ﺣﺎﺿﺮ در اﻳﺮان ، اﺳﺘﺎن ﻳﺰد و اﺻﻔﻬﺎن ﭘﻴﺸﺘﺎز در ﺗﻮﻟﻴﺪ روﻧﺎس ﻫﺴﺘﻨﺪ ﻛﻪ ﻋﻤﺪه ﺷﻬﺮﻫﺎی ﺗﻮﻟﻴﺪ ﻛﻨﻨﺪه آﻧﻬﺎ اردﻛﺎن و ﺑﺎﻓﻖ در اﺳﺘﺎن ﻳﺰد و ﺧﻮر و ﺑﻴﺎﺑﺎﻧﻚ در اﺻﻔﻬﺎن ﻣﻲ ﺑﺎﺷﺪ[4]