Bahri BAŞARAN, Behzat Oral BİTLİSLİ, Buğra OCAK, Ersin ÖNEM

ATMOSFERİK KOŞULLARDAKİ DEĞİŞİMİN BAZI DERİ FİZİKSEL ÖZELLİKLERİNE ETKİSİ

Çalışmada, standart ve tropikal atmosfer koşullarında kondisyonlamanın bazı deri fiziksel özelliklerine etkisi incelenmiştir. Bu amaçla; giysilik koyun derileri TS EN ISO 2419’da önerilen 23 °C ± 2 °C sıcaklık, % 50 ± 5 nispi nemdeki standart atmosfer koşulları ve ISO/DIS 2419’da önerilen 27 °C ± 2 °C sıcaklık, % 65 ± 5 nispi nemdeki tropikal atmosfer koşullarında kondisyonlanmışlardır. Ardından bazı deri fiziksel özelliklerindeki değişimler istatistiksel olarak incelenmiştir. Araştırma sonuçlarına göre; standart atmosfer koşulunda kondisyonlanan koyun derilerinin uzama yüzdesi 53.47 ± 4.10, Young modülü 77.32 ± 23.34 N/mm, çift kenar yırtığı 38.03 ± 8.47 N, su buharı geçirgenliği 6.18 ± 0.55 mg/cm2.h olarak, tropikal atmosfer koşullarında ise derilerin uzama yüzdesi 57.67 ± 5.36, Young modülü 69.42 ± 13.87 N/mm, çift kenar yırtığı 43.06 ± 10.50 N, su buharı geçirgenliği 6.61 ± 0.47 mg/cm2.h olarak saptanmıştır. Bu fiziksel özellikler arasındaki farkın istatistiksel olarak önemli olduğu belirlenmiştir. Çekme mukavemeti ve tek kenar yırtığı değerlerindeki değişimin ise istatistiksel olarak önemli olmadığı tespit edilmiştir

Anahtar Kelimeler:

Deri, Sıcaklık, Nem, Kondisyonlama, Fiziksel özellikler

EFFECT OF DIFFERENT ATMOSPHERIC CONDITIONS ON SOME PHYSICAL PROPERTIES OF LEATHER

In this study, the effect of conditioning under standard and tropical atmospheric conditions on physical properties of leather was investigated. For this purpose, garment sheep leathers were conditioned under standard atmospheric conditions of 23 °C ± 2 °C temperature and % 50 ± relative humidity suggested in TS EN ISO 2419, and under tropical atmospheric conditions of 27 °C ± 2 °C temperature and % 65 ± 5 relative humidity suggested in ISO/DIS 2419. Then, changes in leather physical properties were investigated statistically. According to results, for sheep leather conditioned under standard atmospheric conditions, percentage extension was 53.47 ± 4.10, Young’s modulus was 77.32 ± 23.34 N/mm, double edge tear load was 38.03 ± 8.47 N, water vapour permeability was 6.18 ± 0.55 mg/cm2.h, while under tropical atmospheric conditions, percentage extension was 57.67 ± 5.36, Young’s modulus was 69.42 ± 13.87 N/mm, double edge tear load was 43.06 ± 10.50 N, water vapour permeability was 6.61 ± 0.47 mg/cm2.h. The difference between these physical properties was determined to be statistically significant. Changes in tensile strength and single edge tear load were not significant

Keywords:

Leather, Temperature, Humidity, Conditioning, Physical properties,

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